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120405
Table 4.1D – Past Year Initiation of Illicit Drug Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Illicit Drug Use, and Past Year Illicit Drug Users Aged 12 or Older, by Demographic Characteristics: Standard Errors of Numbers in Thousands and Standard Errors of Percentages, 2010 and 2011
Demographic Characteristic NUMBER OF PAST YEAR
INITIATES (1,000s)		 PERCENTAGE OF PAST
YEAR INITIATES
AMONG TOTAL
POPULATION		 PERCENTAGE OF PAST
YEAR INITIATES
AMONG PERSONS AT
RISK FOR INITIATION1		 PERCENTAGE OF PAST
YEAR INITIATES AMONG
PAST YEAR USERS
2010 2011 2010 2011 2010 2011 2010 2011
*Low precision; no estimate reported.
NOTE: Some 2010 estimates may differ from previously published estimates due to updates (see Section B.3 in Appendix B of the Results from the 2011 National Survey on Drug Use and Health: National Findings).
NOTE: Past Year Initiates are defined as persons who used the substance(s) for the first time in the 12 months prior to date of interview.
NOTE: Illicit Drugs include marijuana/hashish, cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically. These estimates do not include data from new methamphetamine initiation items added in 2007 or new methamphetamine use items added in 2005 and 2006.
1 At Risk for Initiation is defined as persons who did not use the substance(s) in their lifetime or used the substance(s) for the first time in the past year.
Source: SAMHSA, Center for Behavioral Health Statistics and Quality, National Survey on Drug Use and Health, 2010 and 2011.
TOTAL 107 115 0.04 0.04 0.08 0.08 0.28 0.30
AGE                
12-25 73 80 0.12 0.13 0.21 0.22 0.41 0.44
12-17 53 52 0.22 0.21 0.27 0.26 0.96 0.88
12-13 24 22 0.30 0.27 0.33 0.29 2.56 2.89
14-15 35 34 0.40 0.38 0.49 0.46 1.68 1.61
16-17 36 36 0.41 0.40 0.59 0.57 1.22 1.12
18-25 51 60 0.15 0.18 0.33 0.38 0.41 0.47
18-20 48 57 0.33 0.38 0.62 0.71 0.81 0.89
21-25 25 30 0.12 0.14 0.29 0.34 0.36 0.43
26 or Older 77 73 0.04 0.04 0.08 0.07 0.34 0.34
GENDER                
Male 72 62 0.06 0.05 0.12 0.10 0.32 0.28
Female 83 95 0.06 0.07 0.11 0.12 0.49 0.57
GENDER/AGE                
Male 12-17 38 37 0.30 0.29 0.38 0.36 1.38 1.25
Female 12-17 39 40 0.33 0.33 0.41 0.40 1.41 1.39
120508
Table 4.1P – Past Year Initiation of Illicit Drug Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Illicit Drug Use, and Past Year Illicit Drug Users Aged 12 or Older, by Demographic Characteristics: P Values from Tests of Differences of Percentages, 2011 Versus 2010
Demographic Characteristic NUMBER OF PAST YEAR
INITIATES (1,000s)		 PERCENTAGE OF PAST
YEAR INITIATES
AMONG TOTAL
POPULATION		 PERCENTAGE OF PAST
YEAR INITIATES
AMONG PERSONS AT
RISK FOR INITIATION1		 PERCENTAGE OF PAST
YEAR INITIATES AMONG
PAST YEAR USERS
2010 2011 2010 2011 2010 2011 2010 2011
*Low precision; no estimate reported.
N/A: Not applicable.
NOTE: Some 2010 estimates used in the comparisons may differ from previously published estimates due to updates (see Section B.3 in Appendix B of the Results from the 2011 National Survey on Drug Use and Health: National Findings).
NOTE: Past Year Initiates are defined as persons who used the substance(s) for the first time in the 12 months prior to date of interview.
NOTE: Illicit Drugs include marijuana/hashish, cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically. These estimates do not include data from new methamphetamine initiation items added in 2007 or new methamphetamine use items added in 2005 and 2006.
1 At Risk for Initiation is defined as persons who did not use the substance(s) in their lifetime or used the substance(s) for the first time in the past year.
Source: SAMHSA, Center for Behavioral Health Statistics and Quality, National Survey on Drug Use and Health, 2010 and 2011.
TOTAL N/A   0.7225   0.8125   0.3185  
AGE                
12-25 N/A   0.1500   0.2541   0.0702  
12-17 N/A   0.9181   0.9784   0.4081  
12-13 N/A   0.0775   0.0722   0.7494  
14-15 N/A   0.5918   0.7121   0.3419  
16-17 N/A   0.5412   0.4948   0.4665  
18-25 N/A   0.0658   0.1082   0.0555  
18-20 N/A   0.1399   0.2535   0.1925  
21-25 N/A   0.1934   0.2129   0.1542  
26 or Older N/A   0.3647   0.3580   0.4617  
GENDER                
Male N/A   0.3895   0.2632   0.7457  
Female N/A   0.2980   0.2707   0.1628  
GENDER/AGE                
Male 12-17 N/A   0.5980   0.6272   0.7409  
Female 12-17 N/A   0.5314   0.6305   0.1482  
120405
Table 4.2D – Past Year Initiation of Marijuana Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Marijuana Use, and Past Year Marijuana Users Aged 12 or Older, by Demographic Characteristics: Standard Errors of Numbers in Thousands and Standard Errors of Percentages, 2010 and 2011
Demographic Characteristic NUMBER OF PAST YEAR
INITIATES (1,000s)		 PERCENTAGE OF PAST
YEAR INITIATES
AMONG TOTAL
POPULATION		 PERCENTAGE OF PAST
YEAR INITIATES
AMONG PERSONS AT
RISK FOR INITIATION1		 PERCENTAGE OF PAST
YEAR INITIATES AMONG
PAST YEAR USERS
2010 2011 2010 2011 2010 2011 2010 2011
*Low precision; no estimate reported.
NOTE: Some 2010 estimates may differ from previously published estimates due to updates (see Section B.3 in Appendix B of the Results from the 2011 National Survey on Drug Use and Health: National Findings).
NOTE: Past Year Initiates are defined as persons who used the substance(s) for the first time in the 12 months prior to date of interview.
1 At Risk for Initiation is defined as persons who did not use the substance(s) in their lifetime or used the substance(s) for the first time in the past year.
Source: SAMHSA, Center for Behavioral Health Statistics and Quality, National Survey on Drug Use and Health, 2010 and 2011.
TOTAL 93 97 0.04 0.04 0.06 0.06 0.31 0.33
AGE                
12-25 71 79 0.12 0.13 0.18 0.20 0.48 0.51
12-17 51 53 0.21 0.21 0.24 0.24 1.15 1.17
12-13 17 16 0.21 0.21 0.21 0.21 4.30 5.24
14-15 34 35 0.40 0.39 0.44 0.43 2.14 2.10
16-17 36 37 0.41 0.41 0.53 0.55 1.37 1.34
18-25 51 61 0.15 0.18 0.29 0.35 0.47 0.54
18-20 46 57 0.31 0.38 0.54 0.66 0.88 0.99
21-25 26 26 0.12 0.13 0.26 0.27 0.44 0.44
26 or Older 60 49 0.03 0.02 0.05 0.04 0.38 0.31
GENDER                
Male 66 61 0.05 0.05 0.10 0.09 0.37 0.34
Female 66 74 0.05 0.06 0.08 0.09 0.57 0.61
GENDER/AGE                
Male 12-17 36 37 0.29 0.29 0.34 0.34 1.54 1.52
Female 12-17 32 37 0.27 0.30 0.31 0.34 1.72 1.79
120508
Table 4.2P – Past Year Initiation of Marijuana Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Marijuana Use, and Past Year Marijuana Users Aged 12 or Older, by Demographic Characteristics: P Values from Tests of Differences of Percentages, 2011 Versus 2010
Demographic Characteristic NUMBER OF PAST YEAR
INITIATES (1,000s)		 PERCENTAGE OF PAST
YEAR INITIATES
AMONG TOTAL
POPULATION		 PERCENTAGE OF PAST
YEAR INITIATES
AMONG PERSONS AT
RISK FOR INITIATION1		 PERCENTAGE OF PAST
YEAR INITIATES AMONG
PAST YEAR USERS
2010 2011 2010 2011 2010 2011 2010 2011
*Low precision; no estimate reported.
N/A: Not applicable.
NOTE: Some 2010 estimates used in the comparisons may differ from previously published estimates due to updates (see Section B.3 in Appendix B of the Results from the 2011 National Survey on Drug Use and Health: National Findings).
NOTE: Past Year Initiates are defined as persons who used the substance(s) for the first time in the 12 months prior to date of interview.
1 At Risk for Initiation is defined as persons who did not use the substance(s) in their lifetime or used the substance(s) for the first time in the past year.
Source: SAMHSA, Center for Behavioral Health Statistics and Quality, National Survey on Drug Use and Health, 2010 and 2011.
TOTAL N/A   0.2874   0.3232   0.2954  
AGE                
12-25 N/A   0.0441   0.0465   0.0880  
12-17 N/A   0.3707   0.3508   0.4115  
12-13 N/A   0.6791   0.6994   0.3041  
14-15 N/A   0.3407   0.3667   0.2149  
16-17 N/A   0.6560   0.6157   0.6891  
18-25 N/A   0.0707   0.0680   0.1229  
18-20 N/A   0.0396   0.0405   0.1234  
21-25 N/A   0.7071   0.7006   0.7370  
26 or Older N/A   0.3748   0.3668   0.4008  
GENDER                
Male N/A   0.8068   0.9720   0.7333  
Female N/A   0.2336   0.2062   0.3107  
GENDER/AGE                
Male 12-17 N/A   0.5453   0.5220   0.5915  
Female 12-17 N/A   0.4696   0.4558   0.5178  
120405
Table 4.3D – Past Year Initiation of Cigarette Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Cigarette Use, and Past Year Cigarette Users Aged 12 or Older, by Demographic Characteristics: Standard Errors of Numbers in Thousands and Standard Errors of Percentages, 2010 and 2011
Demographic Characteristic NUMBER OF PAST YEAR
INITIATES (1,000s)		 PERCENTAGE OF PAST
YEAR INITIATES
AMONG TOTAL
POPULATION		 PERCENTAGE OF PAST
YEAR INITIATES
AMONG PERSONS AT
RISK FOR INITIATION1		 PERCENTAGE OF PAST
YEAR INITIATES AMONG
PAST YEAR USERS
2010 2011 2010 2011 2010 2011 2010 2011
*Low precision; no estimate reported.
NOTE: Some 2010 estimates may differ from previously published estimates due to updates (see Section B.3 in Appendix B of the Results from the 2011 National Survey on Drug Use and Health: National Findings).
NOTE: Past Year Initiates are defined as persons who used the substance(s) for the first time in the 12 months prior to date of interview.
1 At Risk for Initiation is defined as persons who did not use the substance(s) in their lifetime or used the substance(s) for the first time in the past year.
Source: SAMHSA, Center for Behavioral Health Statistics and Quality, National Survey on Drug Use and Health, 2010 and 2011.
TOTAL 81 86 0.03 0.03 0.09 0.09 0.12 0.13
AGE                
12-25 72 76 0.12 0.13 0.21 0.21 0.38 0.41
12-17 47 46 0.19 0.18 0.23 0.22 1.09 1.11
12-13 17 18 0.21 0.23 0.22 0.24 3.77 4.46
14-15 28 27 0.33 0.31 0.38 0.36 1.94 2.23
16-17 37 34 0.42 0.38 0.58 0.52 1.42 1.37
18-25 54 59 0.16 0.17 0.38 0.40 0.36 0.40
18-20 51 56 0.34 0.36 0.68 0.67 0.76 0.83
21-25 22 26 0.11 0.12 0.31 0.34 0.24 0.28
26 or Older 24 25 0.01 0.01 0.04 0.04 0.05 0.05
GENDER                
Male 57 63 0.05 0.05 0.15 0.16 0.16 0.17
Female 54 56 0.04 0.04 0.10 0.10 0.18 0.18
GENDER/AGE                
Male 12-17 34 34 0.27 0.27 0.33 0.32 1.53 1.58
Female 12-17 33 31 0.28 0.25 0.33 0.29 1.56 1.61
120508
Table 4.3P – Past Year Initiation of Cigarette Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Cigarette Use, and Past Year Cigarette Users Aged 12 or Older, by Demographic Characteristics: P Values from Tests of Differences of Percentages, 2011 Versus 2010
Demographic Characteristic NUMBER OF PAST YEAR
INITIATES (1,000s)		 PERCENTAGE OF PAST
YEAR INITIATES
AMONG TOTAL
POPULATION		 PERCENTAGE OF PAST
YEAR INITIATES
AMONG PERSONS AT
RISK FOR INITIATION1		 PERCENTAGE OF PAST
YEAR INITIATES AMONG
PAST YEAR USERS
2010 2011 2010 2011 2010 2011 2010 2011
*Low precision; no estimate reported.
N/A: Not applicable.
NOTE: Some 2010 estimates used in the comparisons may differ from previously published estimates due to updates (see Section B.3 in Appendix B of the Results from the 2011 National Survey on Drug Use and Health: National Findings).
NOTE: Past Year Initiates are defined as persons who used the substance(s) for the first time in the 12 months prior to date of interview.
1 At Risk for Initiation is defined as persons who did not use the substance(s) in their lifetime or used the substance(s) for the first time in the past year.
Source: SAMHSA, Center for Behavioral Health Statistics and Quality, National Survey on Drug Use and Health, 2010 and 2011.
TOTAL N/A   0.6856   0.2332   0.7028  
AGE                
12-25 N/A   0.7109   0.3505   0.6232  
12-17 N/A   0.2775   0.1888   0.6724  
12-13 N/A   0.6531   0.6106   0.2345  
14-15 N/A   0.0407   0.0238   0.9548  
16-17 N/A   0.8447   0.9752   0.6147  
18-25 N/A   0.7122   0.9082   0.4766  
18-20 N/A   0.6565   0.8144   0.3587  
21-25 N/A   0.7639   0.8699   0.6786  
26 or Older N/A   0.8555   0.7778   0.9200  
GENDER                
Male N/A   0.5332   0.2452   0.9638  
Female N/A   0.9441   0.6236   0.5574  
GENDER/AGE                
Male 12-17 N/A   0.5585   0.5005   0.9822  
Female 12-17 N/A   0.3564   0.2430   0.5303  
120405
Table 4.4D – Past Year Initiation of Alcohol Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Alcohol Use, and Past Year Alcohol Users Aged 12 or Older, by Demographic Characteristics: Standard Errors of Numbers in Thousands and Standard Errors of Percentages, 2010 and 2011
Demographic Characteristic NUMBER OF PAST YEAR
INITIATES (1,000s)		 PERCENTAGE OF PAST
YEAR INITIATES
AMONG TOTAL
POPULATION		 PERCENTAGE OF PAST
YEAR INITIATES
AMONG PERSONS AT
RISK FOR INITIATION1		 PERCENTAGE OF PAST
YEAR INITIATES AMONG
PAST YEAR USERS
2010 2011 2010 2011 2010 2011 2010 2011
*Low precision; no estimate reported.
NOTE: Some 2010 estimates may differ from previously published estimates due to updates (see Section B.3 in Appendix B of the Results from the 2011 National Survey on Drug Use and Health: National Findings).
NOTE: Past Year Initiates are defined as persons who used the substance(s) for the first time in the 12 months prior to date of interview.
1 At Risk for Initiation is defined as persons who did not use the substance(s) in their lifetime or used the substance(s) for the first time in the past year.
Source: SAMHSA, Center for Behavioral Health Statistics and Quality, National Survey on Drug Use and Health, 2010 and 2011.
TOTAL 131 124 0.05 0.05 0.27 0.26 0.08 0.07
AGE                
12-25 98 106 0.17 0.18 0.37 0.37 0.29 0.33
12-17 62 69 0.25 0.28 0.34 0.36 0.74 0.84
12-13 27 27 0.33 0.32 0.36 0.35 2.78 2.92
14-15 42 45 0.48 0.48 0.61 0.61 1.31 1.47
16-17 47 51 0.50 0.56 0.82 0.89 0.97 1.05
18-25 79 80 0.23 0.23 0.95 0.93 0.29 0.30
18-20 67 70 0.44 0.46 1.18 1.16 0.61 0.69
21-25 53 47 0.24 0.22 1.70 1.50 0.29 0.26
26 or Older 76 32 0.04 0.02 0.31 0.13 0.06 0.02
GENDER                
Male 97 82 0.08 0.07 0.47 0.42 0.12 0.10
Female 82 85 0.06 0.06 0.30 0.30 0.10 0.10
GENDER/AGE                
Male 12-17 46 49 0.37 0.38 0.49 0.50 1.12 1.22
Female 12-17 44 48 0.37 0.39 0.49 0.51 1.07 1.13
120508
Table 4.4P – Past Year Initiation of Alcohol Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Alcohol Use, and Past Year Alcohol Users Aged 12 or Older, by Demographic Characteristics: P Values from Tests of Differences of Percentages, 2011 Versus 2010
Demographic Characteristic NUMBER OF PAST YEAR
INITIATES (1,000s)		 PERCENTAGE OF PAST
YEAR INITIATES
AMONG TOTAL
POPULATION		 PERCENTAGE OF PAST
YEAR INITIATES
AMONG PERSONS AT
RISK FOR INITIATION1		 PERCENTAGE OF PAST
YEAR INITIATES AMONG
PAST YEAR USERS
2010 2011 2010 2011 2010 2011 2010 2011
*Low precision; no estimate reported.
N/A: Not applicable.
NOTE: Some 2010 estimates used in the comparisons may differ from previously published estimates due to updates (see Section B.3 in Appendix B of the Results from the 2011 National Survey on Drug Use and Health: National Findings).
NOTE: Past Year Initiates are defined as persons who used the substance(s) for the first time in the 12 months prior to date of interview.
1 At Risk for Initiation is defined as persons who did not use the substance(s) in their lifetime or used the substance(s) for the first time in the past year.
Source: SAMHSA, Center for Behavioral Health Statistics and Quality, National Survey on Drug Use and Health, 2010 and 2011.
TOTAL N/A   0.7894   0.5317   0.8619  
AGE                
12-25 N/A   0.7575   0.3829   0.2480  
12-17 N/A   0.3965   0.6843   0.0426  
12-13 N/A   0.9781   0.9595   0.1210  
14-15 N/A   0.8063   0.3973   0.0709  
16-17 N/A   0.2317   0.3173   0.2372  
18-25 N/A   0.6247   0.0572   0.9200  
18-20 N/A   0.4303   0.0220   0.8738  
21-25 N/A   0.6963   0.9487   0.6103  
26 or Older N/A   0.2929   0.2924   0.2919  
GENDER                
Male N/A   0.7049   0.7027   0.6753  
Female N/A   0.9834   0.6546   0.8341  
GENDER/AGE                
Male 12-17 N/A   0.3391   0.4622   0.0863  
Female 12-17 N/A   0.8305   0.8493   0.2637  
120405
Table 4.5D – Past Year Initiation of Substance Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Substance Use, and Past Year Substance Users Aged 12 or Older: Standard Errors of Numbers in Thousands and Standard Errors of Percentages, 2010 and 2011
Substance NUMBER OF PAST YEAR
INITIATES (1,000s)		 PERCENTAGE OF PAST
YEAR INITIATES
AMONG TOTAL
POPULATION		 PERCENTAGE OF PAST
YEAR INITIATES
AMONG PERSONS AT
RISK FORINITIATION1		 PERCENTAGE OF PAST
YEAR INITIATES AMONG
PAST YEAR USERS
2010 2011 2010 2011 2010 2011 2010 2011
*Low precision; no estimate reported.
-- Not available.
NOTE: Some 2010 estimates may differ from previously published estimates due to updates (see Section B.3 in Appendix B of the Results from the 2011 National Survey on Drug Use and Health: National Findings).
NOTE: Past Year Initiates are defined as persons who used the substance(s) for the first time in the 12 months prior to date of interview.
1 At Risk for Initiation is defined as persons who did not use the substance(s) in their lifetime or used the substance(s) for the first time in the past year.
2 Illicit Drugs include marijuana/hashish, cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically. Illicit Drugs Other Than Marijuana include cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically.
3 Estimates in these designated rows do not include data from new methamphetamine initiation items added in 2007 or new methamphetamine use items added in 2005 and 2006.
4 Nonmedical use of prescription-type psychotherapeutics includes the nonmedical use of pain relievers, tranquilizers, stimulants, or sedatives and does not include over-the-counter drugs.
5 Daily Cigarette Use is defined as ever smoking every day for at least 30 days.
6 Smokeless Tobacco includes chewing tobacco or snuff.
Source: SAMHSA, Center for Behavioral Health Statistics and Quality, National Survey on Drug Use and Health, 2010 and 2011.
ILLICIT DRUGS2,3 107 115 0.04 0.04 0.08 0.08 0.28 0.30
Marijuana and Hashish 93 97 0.04 0.04 0.06 0.06 0.31 0.33
Cocaine 57 48 0.02 0.02 0.03 0.02 1.22 1.27
Crack 20 14 0.01 0.01 0.01 0.01 2.23 2.37
Heroin 24 26 0.01 0.01 0.01 0.01 3.90 4.32
Hallucinogens 61 58 0.02 0.02 0.03 0.03 1.24 1.40
LSD 39 30 0.02 0.01 0.02 0.01 3.44 2.98
PCP 11 10 0.00 0.00 0.00 0.00 * *
Ecstasy 56 59 0.02 0.02 0.02 0.02 1.87 2.08
Inhalants 51 47 0.02 0.02 0.02 0.02 2.56 2.46
Nonmedical Use of Psychotherapeutics3,4 113 118 0.04 0.05 0.06 0.06 0.68 0.76
Pain Relievers 91 102 0.04 0.04 0.04 0.05 0.75 0.87
OxyContin® 53 49 0.02 0.02 0.02 0.02 2.59 2.66
Tranquilizers 86 90 0.03 0.03 0.04 0.04 1.44 1.57
Stimulants3 52 59 0.02 0.02 0.02 0.02 1.81 2.18
Sedatives 46 29 0.02 0.01 0.02 0.01 4.60 5.09
ILLICIT DRUGS OTHER THAN MARIJUANA2,3 109 109 0.04 0.04 0.06 0.06 0.52 0.57
CIGARETTES 81 86 0.03 0.03 0.09 0.09 0.12 0.13
Daily Cigarette Use5 57 55 0.02 0.02 0.04 0.03 -- --
SMOKELESS TOBACCO6 72 75 0.03 0.03 0.03 0.04 0.60 0.61
CIGARS 120 143 0.05 0.06 0.07 0.08 0.46 0.54
ALCOHOL 131 124 0.05 0.05 0.27 0.26 0.08 0.07
120508
Table 4.5P – Past Year Initiation of Substance Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Substance Use, and Past Year Substance Users Aged 12 or Older: P Values from Tests of Differences of Percentages, 2011 Versus 2010
Substance NUMBER OF PAST YEAR
INITIATES (1,000s)		 PERCENTAGE OF PAST
YEAR INITIATES
AMONG TOTAL
POPULATION		 PERCENTAGE OF PAST
YEAR INITIATES
AMONG PERSONS AT
RISK FOR INITIATION1		 PERCENTAGE OF PAST
YEAR INITIATES AMONG
PAST YEAR USERS
2010 2011 2010 2011 2010 2011 2010 2011
*Low precision; no estimate reported.
N/A: Not applicable.
-- Not available.
NOTE: Some 2010 estimates used in the comparisons may differ from previously published estimates due to updates (see Section B.3 in Appendix B of the Results from the 2011 National Survey on Drug Use and Health: National Findings).
NOTE: Past Year Initiates are defined as persons who used the substance(s) for the first time in the 12 months prior to date of interview.
1 At Risk for Initiation is defined as persons who did not use the substance(s) in their lifetime or used the substance(s) for the first time in the past year.
2 Illicit Drugs include marijuana/hashish, cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically. Illicit Drugs Other Than Marijuana include cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically.
3 Estimates in these designated rows do not include data from new methamphetamine initiation items added in 2007 or new methamphetamine use items added in 2005 and 2006.
4 Nonmedical use of prescription-type psychotherapeutics includes the nonmedical use of pain relievers, tranquilizers, stimulants, or sedatives and does not include over-the-counter drugs.
5 Daily Cigarette Use is defined as ever smoking every day for at least 30 days.
6 Smokeless Tobacco includes chewing tobacco or snuff.
Source: SAMHSA, Center for Behavioral Health Statistics and Quality, National Survey on Drug Use and Health, 2010 and 2011.
ILLICIT DRUGS2,3 N/A   0.7225   0.8125   0.3185  
Marijuana and Hashish N/A   0.2874   0.3232   0.2954  
Cocaine N/A   0.8126   0.8460   0.0631  
Crack N/A   0.7265   0.7154   0.3963  
Heroin N/A   0.3450   0.3460   0.3126  
Hallucinogens N/A   0.1436   0.1183   0.7252  
LSD N/A   0.5690   0.5539   0.5926  
PCP N/A   0.9618   0.9643   *  
Ecstasy N/A   0.6156   0.5653   0.4212  
Inhalants N/A   0.2319   0.2096   0.9169  
Nonmedical Use of Psychotherapeutics3,4 N/A   0.4880   0.4322   0.4122  
Pain Relievers N/A   0.2768   0.2502   0.6760  
OxyContin® N/A   0.0817   0.0808   0.5574  
Tranquilizers N/A   0.6325   0.6088   0.5485  
Stimulants3 N/A   0.6651   0.7088   0.1825  
Sedatives N/A   0.0778   0.0774   0.7316  
ILLICIT DRUGS OTHER THAN MARIJUANA2,3 N/A   0.3164   0.2385   0.4842  
CIGARETTES N/A   0.6856   0.2332   0.7028  
Daily Cigarette Use5 N/A   0.2225   0.1418   --  
SMOKELESS TOBACCO6 N/A   0.1529   0.1662   0.5866  
CIGARS N/A   0.2967   0.2419   0.8741  
ALCOHOL N/A   0.7894   0.5317   0.8619  
120405
Table 4.6D – Past Year Initiation of Substance Use among Persons Aged 12 to 17, Persons Aged 12 to 17 At Risk for Initiation of Substance Use, and Past Year Substance Users Aged 12 to 17: Standard Errors of Numbers in Thousands and Standard Errors of Percentages, 2010 and 2011
Substance NUMBER OF PAST YEAR
INITIATES (1,000s)		 PERCENTAGE OF PAST
YEAR INITIATES
AMONG TOTAL
POPULATION		 PERCENTAGE OF PAST
YEAR INITIATES
AMONG PERSONS AT
RISK FOR INITIATION1		 PERCENTAGE OF PAST
YEAR INITIATES AMONG
PAST YEAR USERS
2010 2011 2010 2011 2010 2011 2010 2011
*Low precision; no estimate reported.
-- Not available.
NOTE: Some 2010 estimates may differ from previously published estimates due to updates (see Section B.3 in Appendix B of the Results from the 2011 National Survey on Drug Use and Health: National Findings).
NOTE: Past Year Initiates are defined as persons who used the substance(s) for the first time in the 12 months prior to date of interview.
1 At Risk for Initiation is defined as persons who did not use the substance(s) in their lifetime or used the substance(s) for the first time in the past year.
2 Illicit Drugs include marijuana/hashish, cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically. Illicit Drugs Other Than Marijuana include cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically.
3 Estimates in these designated rows do not include data from new methamphetamine initiation items added in 2007 or new methamphetamine use items added in 2005 and 2006.
4 Nonmedical use of prescription-type psychotherapeutics includes the nonmedical use of pain relievers, tranquilizers, stimulants, or sedatives and does not include over-the-counter drugs.
5 Daily Cigarette Use is defined as ever smoking every day for at least 30 days.
6 Smokeless Tobacco includes chewing tobacco or snuff.
Source: SAMHSA, Center for Behavioral Health Statistics and Quality, National Survey on Drug Use and Health, 2010 and 2011.
ILLICIT DRUGS2,3 53 52 0.22 0.21 0.27 0.26 0.96 0.88
Marijuana and Hashish 51 53 0.21 0.21 0.24 0.24 1.15 1.17
Cocaine 18 16 0.07 0.07 0.07 0.07 4.45 4.34
Crack 4 5 0.02 0.02 0.02 0.02 * *
Heroin 7 10 0.03 0.04 0.03 0.04 * *
Hallucinogens 33 28 0.14 0.11 0.14 0.11 2.54 2.71
LSD 15 16 0.06 0.07 0.06 0.07 5.23 4.38
PCP 6 7 0.03 0.03 0.03 0.03 * *
Ecstasy 27 24 0.11 0.10 0.11 0.10 3.28 3.39
Inhalants 33 30 0.14 0.12 0.15 0.13 2.39 2.42
Nonmedical Use of Psychotherapeutics3,4 39 35 0.16 0.14 0.17 0.15 1.70 1.59
Pain Relievers 39 32 0.16 0.13 0.17 0.14 1.90 1.71
OxyContin® 19 15 0.08 0.06 0.08 0.06 4.39 3.69
Tranquilizers 21 25 0.09 0.10 0.09 0.10 3.38 2.93
Stimulants3 21 19 0.08 0.07 0.09 0.08 3.94 4.04
Sedatives 12 10 0.05 0.04 0.05 0.04 * *
ILLICIT DRUGS OTHER THAN MARIJUANA2,3 49 41 0.20 0.16 0.23 0.19 1.37 1.30
CIGARETTES 47 46 0.19 0.18 0.23 0.22 1.09 1.11
Daily Cigarette Use5 24 22 0.10 0.09 0.10 0.09 -- --
SMOKELESS TOBACCO6 33 31 0.14 0.13 0.14 0.13 1.91 2.03
CIGARS 40 41 0.16 0.17 0.18 0.18 1.55 1.61
ALCOHOL 62 69 0.25 0.28 0.34 0.36 0.74 0.84
120508
Table 4.6P – Past Year Initiation of Substance Use among Persons Aged 12 to 17, Persons Aged 12 to 17 At Risk for Initiation of Substance Use, and Past Year Substance Users Aged 12 to 17: P Values from Tests of Differences of Percentages, 2011 Versus 2010
Substance NUMBER OF PAST YEAR
INITIATES (1,000s)		 PERCENTAGE OF PAST
YEAR INITIATES
AMONG TOTAL
POPULATION		 PERCENTAGE OF PAST
YEAR INITIATES
AMONG PERSONS AT
RISK FOR INITIATION1		 PERCENTAGE OF PAST
YEAR INITIATES AMONG
PAST YEAR USERS
2010 2011 2010 2011 2010 2011 2010 2011
*Low precision; no estimate reported.
N/A: Not applicable.
-- Not available.
NOTE: Some 2010 estimates used in the comparisons may differ from previously published estimates due to updates (see Section B.3 in Appendix B of the Results from the 2011 National Survey on Drug Use and Health: National Findings).
NOTE: Past Year Initiates are defined as persons who used the substance(s) for the first time in the 12 months prior to date of interview.
1 At Risk for Initiation is defined as persons who did not use the substance(s) in their lifetime or used the substance(s) for the first time in the past year.
2 Illicit Drugs include marijuana/hashish, cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically. Illicit Drugs Other Than Marijuana include cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically.
3 Estimates in these designated rows do not include data from new methamphetamine initiation items added in 2007 or new methamphetamine use items added in 2005 and 2006.
4 Nonmedical use of prescription-type psychotherapeutics includes the nonmedical use of pain relievers, tranquilizers, stimulants, or sedatives and does not include over-the-counter drugs.
5 Daily Cigarette Use is defined as ever smoking every day for at least 30 days.
6 Smokeless Tobacco includes chewing tobacco or snuff.
Source: SAMHSA, Center for Behavioral Health Statistics and Quality, National Survey on Drug Use and Health, 2010 and 2011.
ILLICIT DRUGS2,3 N/A   0.9181   0.9784   0.4081  
Marijuana and Hashish N/A   0.3707   0.3508   0.4115  
Cocaine N/A   0.5805   0.5767   0.8418  
Crack N/A   0.5023   0.5022   *  
Heroin N/A   0.2586   0.2582   *  
Hallucinogens N/A   0.0452   0.0449   0.5742  
LSD N/A   0.3661   0.3691   0.6058  
PCP N/A   0.4780   0.4785   *  
Ecstasy N/A   0.3896   0.3903   0.6801  
Inhalants N/A   0.1585   0.1427   0.6045  
Nonmedical Use of Psychotherapeutics3,4 N/A   0.3581   0.3324   0.9863  
Pain Relievers N/A   0.0673   0.0617   0.1330  
OxyContin® N/A   0.4577   0.4591   0.7996  
Tranquilizers N/A   0.0999   0.1064   0.0075  
Stimulants3 N/A   0.3428   0.3431   0.8104  
Sedatives N/A   0.4193   0.4169   *  
ILLICIT DRUGS OTHER THAN MARIJUANA2,3 N/A   0.0985   0.0790   0.8588  
CIGARETTES N/A   0.2775   0.1888   0.6724  
Daily Cigarette Use5 N/A   0.4293   0.4097   --  
SMOKELESS TOBACCO6 N/A   0.0863   0.0801   0.4935  
CIGARS N/A   0.9394   0.9926   0.9973  
ALCOHOL N/A   0.3965   0.6843   0.0426  
120405
Table 4.7D – Past Year Initiation of Substance Use among Persons Aged 18 to 25, Persons Aged 18 to 25 At Risk for Initiation of Substance Use, and Past Year Substance Users Aged 18 to 25: Standard Errors of Numbers in Thousands and Standard Errors of Percentages, 2010 and 2011
Substance NUMBER OF PAST YEAR
INITIATES (1,000s)		 PERCENTAGE OF PAST
YEAR INITIATES
AMONG TOTAL
POPULATION		 PERCENTAGE OF PAST
YEAR INITIATES
AMONG PERSONS AT
RISK FOR INITIATION1		 PERCENTAGE OF PAST
YEAR INITIATES AMONG
PAST YEAR USERS
2010 2011 2010 2011 2010 2011 2010 2011
*Low precision; no estimate reported.
-- Not available.
NOTE: Some 2010 estimates may differ from previously published estimates due to updates (see Section B.3 in Appendix B of the Results from the 2011 National Survey on Drug Use and Health: National Findings).
NOTE: Past Year Initiates are defined as persons who used the substance(s) for the first time in the 12 months prior to date of interview.
1 At Risk for Initiation is defined as persons who did not use the substance(s) in their lifetime or used the substance(s) for the first time in the past year.
2 Illicit Drugs include marijuana/hashish, cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically. Illicit Drugs Other Than Marijuana include cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically.
3 Estimates in these designated rows do not include data from new methamphetamine initiation items added in 2007 or new methamphetamine use items added in 2005 and 2006.
4 Nonmedical use of prescription-type psychotherapeutics includes the nonmedical use of pain relievers, tranquilizers, stimulants, or sedatives and does not include over-the-counter drugs.
5 Daily Cigarette Use is defined as ever smoking every day for at least 30 days.
6 Smokeless Tobacco includes chewing tobacco or snuff.
Source: SAMHSA, Center for Behavioral Health Statistics and Quality, National Survey on Drug Use and Health, 2010 and 2011.
ILLICIT DRUGS2,3 51 60 0.15 0.18 0.33 0.38 0.41 0.47
Marijuana and Hashish 51 61 0.15 0.18 0.29 0.35 0.47 0.54
Cocaine 32 38 0.09 0.11 0.11 0.12 1.76 1.96
Crack 8 9 0.02 0.03 0.02 0.03 3.98 *
Heroin 15 17 0.04 0.05 0.04 0.05 5.50 5.37
Hallucinogens 45 42 0.13 0.12 0.16 0.15 1.53 1.55
LSD 33 23 0.10 0.07 0.10 0.07 3.90 3.45
PCP 9 8 0.03 0.02 0.03 0.02 * *
Ecstasy 40 37 0.12 0.11 0.13 0.12 2.12 2.15
Inhalants 27 32 0.08 0.09 0.09 0.10 3.24 4.07
Nonmedical Use of Psychotherapeutics3,4 48 50 0.14 0.15 0.19 0.19 0.90 1.02
Pain Relievers 43 44 0.13 0.13 0.16 0.16 1.05 1.18
OxyContin® 22 22 0.07 0.06 0.07 0.07 2.57 2.89
Tranquilizers 40 33 0.12 0.10 0.13 0.11 1.82 1.78
Stimulants3 28 29 0.08 0.08 0.09 0.09 2.05 2.36
Sedatives 14 13 0.04 0.04 0.04 0.04 5.91 *
ILLICIT DRUGS OTHER THAN MARIJUANA2,3 54 54 0.16 0.16 0.24 0.23 0.76 0.83
CIGARETTES 54 59 0.16 0.17 0.38 0.40 0.36 0.40
Daily Cigarette Use5 44 37 0.13 0.11 0.18 0.15 -- --
SMOKELESS TOBACCO6 40 43 0.12 0.12 0.15 0.15 1.02 1.19
CIGARS 66 58 0.19 0.17 0.30 0.26 0.78 0.73
ALCOHOL 79 80 0.23 0.23 0.95 0.93 0.29 0.30
120508
Table 4.7P – Past Year Initiation of Substance Use among Persons Aged 18 to 25, Persons Aged 18 to 25 At Risk for Initiation of Substance Use, and Past Year Substance Users Aged 18 to 25: P Values from Tests of Differences of Percentages, 2011 Versus 2010
Substance NUMBER OF PAST YEAR
INITIATES (1,000s)		 PERCENTAGE OF PAST
YEAR INITIATES
AMONG TOTAL
POPULATION		 PERCENTAGE OF PAST
YEAR INITIATES
AMONG PERSONS AT
RISK FOR INITIATION1		 PERCENTAGE OF PAST
YEAR INITIATES AMONG
PAST YEAR USERS
2010 2011 2010 2011 2010 2011 2010 2011
*Low precision; no estimate reported.
N/A: Not applicable.
-- Not available.
NOTE: Some 2010 estimates used in the comparisons may differ from previously published estimates due to updates (see Section B.3 in Appendix B of the Results from the 2011 National Survey on Drug Use and Health: National Findings).
NOTE: Past Year Initiates are defined as persons who used the substance(s) for the first time in the 12 months prior to date of interview.
1 At Risk for Initiation is defined as persons who did not use the substance(s) in their lifetime or used the substance(s) for the first time in the past year.
2 Illicit Drugs include marijuana/hashish, cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically. Illicit Drugs Other Than Marijuana include cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically.
3 Estimates in these designated rows do not include data from new methamphetamine initiation items added in 2007 or new methamphetamine use items added in 2005 and 2006.
4 Nonmedical use of prescription-type psychotherapeutics includes the nonmedical use of pain relievers, tranquilizers, stimulants, or sedatives and does not include over-the-counter drugs.
5 Daily Cigarette Use is defined as ever smoking every day for at least 30 days.
6 Smokeless Tobacco includes chewing tobacco or snuff.
Source: SAMHSA, Center for Behavioral Health Statistics and Quality, National Survey on Drug Use and Health, 2010 and 2011.
ILLICIT DRUGS2,3 N/A   0.0658   0.1082   0.0555  
Marijuana and Hashish N/A   0.0707   0.0680   0.1229  
Cocaine N/A   0.0568   0.0756   0.0119  
Crack N/A   0.9384   0.9526   *  
Heroin N/A   0.4298   0.4332   0.5536  
Hallucinogens N/A   0.3813   0.3308   0.7649  
LSD N/A   0.3039   0.2944   0.0610  
PCP N/A   0.6292   0.6258   *  
Ecstasy N/A   0.4137   0.4157   0.8186  
Inhalants N/A   0.8604   0.8192   0.2186  
Nonmedical Use of Psychotherapeutics3,4 N/A   0.6531   0.8663   0.0274  
Pain Relievers N/A   0.5288   0.3841   0.3765  
OxyContin® N/A   0.0959   0.0949   0.6499  
Tranquilizers N/A   0.1834   0.1612   0.9184  
Stimulants3 N/A   0.7212   0.6561   0.2013  
Sedatives N/A   0.1100   0.1107   *  
ILLICIT DRUGS OTHER THAN MARIJUANA2,3 N/A   0.8339   0.8616   0.1730  
CIGARETTES N/A   0.7122   0.9082   0.4766  
Daily Cigarette Use5 N/A   0.1859   0.1617   --  
SMOKELESS TOBACCO6 N/A   0.3280   0.3011   0.8264  
CIGARS N/A   0.0624   0.0303   0.1331  
ALCOHOL N/A   0.6247   0.0572   0.9200  
120405
Table 4.8D – Past Year Initiation of Substance Use among Persons Aged 26 or Older, Persons Aged 26 or Older At Risk for Initiation of Substance Use, and Past Year Substance Users Aged 26 or Older: Standard Errors of Numbers in Thousands and Standard Errors of Percentages, 2010 and 2011
Substance NUMBER OF PAST YEAR
INITIATES (1,000s)		 PERCENTAGE OF PAST
YEAR INITIATES
AMONG TOTAL
POPULATION		 PERCENTAGE OF PAST
YEAR INITIATES
AMONG PERSONS AT
RISK FOR INITIATION1		 PERCENTAGE OF PAST
YEAR INITIATES AMONG
PAST YEAR USERS
2010 2011 2010 2011 2010 2011 2010 2011
*Low precision; no estimate reported.
-- Not available.
NOTE: Some 2010 estimates may differ from previously published estimates due to updates (see Section B.3 in Appendix B of the Results from the 2011 National Survey on Drug Use and Health: National Findings).
NOTE: Past Year Initiates are defined as persons who used the substance(s) for the first time in the 12 months prior to date of interview.
1 At Risk for Initiation is defined as persons who did not use the substance(s) in their lifetime or used the substance(s) for the first time in the past year.
2 Illicit Drugs include marijuana/hashish, cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically. Illicit Drugs Other Than Marijuana include cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically.
3 Estimates in these designated rows do not include data from new methamphetamine initiation items added in 2007 or new methamphetamine use items added in 2005 and 2006.
4 Nonmedical use of prescription-type psychotherapeutics includes the nonmedical use of pain relievers, tranquilizers, stimulants, or sedatives and does not include over-the-counter drugs.
5 Daily Cigarette Use is defined as ever smoking every day for at least 30 days.
6 Smokeless Tobacco includes chewing tobacco or snuff.
Source: SAMHSA, Center for Behavioral Health Statistics and Quality, National Survey on Drug Use and Health, 2010 and 2011.
ILLICIT DRUGS2,3 77 73 0.04 0.04 0.08 0.07 0.34 0.34
Marijuana and Hashish 60 49 0.03 0.02 0.05 0.04 0.38 0.31
Cocaine 41 22 0.02 0.01 0.03 0.01 1.48 1.04
Crack 18 9 0.01 0.00 0.01 0.00 * *
Heroin 17 17 0.01 0.01 0.01 0.01 * *
Hallucinogens 18 28 0.01 0.01 0.01 0.02 1.30 2.59
LSD 15 8 0.01 0.00 0.01 0.00 * *
PCP * * * * * * * *
Ecstasy 24 40 0.01 0.02 0.01 0.02 3.45 *
Inhalants 27 17 0.01 0.01 0.02 0.01 * *
Nonmedical Use of Psychotherapeutics3,4 91 92 0.05 0.05 0.06 0.06 0.95 1.03
Pain Relievers 69 84 0.04 0.04 0.04 0.05 0.98 1.27
OxyContin® 44 41 0.02 0.02 0.02 0.02 4.44 4.73
Tranquilizers 73 76 0.04 0.04 0.04 0.04 2.05 2.23
Stimulants3 39 46 0.02 0.02 0.02 0.03 3.14 3.55
Sedatives 42 24 0.02 0.01 0.02 0.01 * *
ILLICIT DRUGS OTHER THAN MARIJUANA2,3 77 79 0.04 0.04 0.06 0.06 0.65 0.74
CIGARETTES 24 25 0.01 0.01 0.04 0.04 0.05 0.05
Daily Cigarette Use5 23 32 0.01 0.02 0.02 0.03 -- --
SMOKELESS TOBACCO6 48 48 0.02 0.02 0.03 0.03 0.62 0.63
CIGARS 87 119 0.04 0.06 0.07 0.09 0.52 0.75
ALCOHOL 76 32 0.04 0.02 0.31 0.13 0.06 0.02
120508
Table 4.8P – Past Year Initiation of Substance Use among Persons Aged 26 or Older, Persons Aged 26 or Older At Risk for Initiation of Substance Use, and Past Year Substance Users Aged 26 or Older: P Values from Tests of Differences of Percentages, 2011 Versus 2010
Substance NUMBER OF PAST YEAR
INITIATES (1,000s)		 PERCENTAGE OF PAST
YEAR INITIATES
AMONG TOTAL
POPULATION		 PERCENTAGE OF PAST
YEAR INITIATES
AMONG PERSONS AT
RISK FOR INITIATION1		 PERCENTAGE OF PAST
YEAR INITIATES AMONG
PAST YEAR USERS
2010 2011 2010 2011 2010 2011 2010 2011
*Low precision; no estimate reported.
N/A: Not applicable.
-- Not available.
NOTE: Some 2010 estimates used in the comparisons may differ from previously published estimates due to updates (see Section B.3 in Appendix B of the Results from the 2011 National Survey on Drug Use and Health: National Findings).
NOTE: Past Year Initiates are defined as persons who used the substance(s) for the first time in the 12 months prior to date of interview.
1 At Risk for Initiation is defined as persons who did not use the substance(s) in their lifetime or used the substance(s) for the first time in the past year.
2 Illicit Drugs include marijuana/hashish, cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically. Illicit Drugs Other Than Marijuana include cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically.
3 Estimates in these designated rows do not include data from new methamphetamine initiation items added in 2007 or new methamphetamine use items added in 2005 and 2006.
4 Nonmedical use of prescription-type psychotherapeutics includes the nonmedical use of pain relievers, tranquilizers, stimulants, or sedatives and does not include over-the-counter drugs.
5 Daily Cigarette Use is defined as ever smoking every day for at least 30 days.
6 Smokeless Tobacco includes chewing tobacco or snuff.
Source: SAMHSA, Center for Behavioral Health Statistics and Quality, National Survey on Drug Use and Health, 2010 and 2011.
ILLICIT DRUGS2,3 N/A   0.3647   0.3580   0.4617  
Marijuana and Hashish N/A   0.3748   0.3668   0.4008  
Cocaine N/A   0.2068   0.2049   0.4125  
Crack N/A   0.4958   0.4927   *  
Heroin N/A   0.9059   0.9062   *  
Hallucinogens N/A   0.4928   0.5016   0.2905  
LSD N/A   0.7154   0.7133   *  
PCP N/A   *   *   *  
Ecstasy N/A   0.4282   0.4379   *  
Inhalants N/A   0.4856   0.4809   *  
Nonmedical Use of Psychotherapeutics3,4 N/A   0.4537   0.4397   0.8443  
Pain Relievers N/A   0.8540   0.8459   0.7337  
OxyContin® N/A   0.3492   0.3478   0.5914  
Tranquilizers N/A   0.6832   0.6749   0.9963  
Stimulants3 N/A   0.2185   0.2249   0.1788  
Sedatives N/A   0.2698   0.2693   *  
ILLICIT DRUGS OTHER THAN MARIJUANA2,3 N/A   0.5993   0.5721   0.9961  
CIGARETTES N/A   0.8555   0.7778   0.9200  
Daily Cigarette Use5 N/A   0.8611   0.9082   --  
SMOKELESS TOBACCO6 N/A   0.8288   0.8418   0.9236  
CIGARS N/A   0.7927   0.7700   0.9564  
ALCOHOL N/A   0.2929   0.2924   0.2919  
120404
Table 4.9C – Past Year Initiation of Substance Use among Persons Aged 12 or Older, by Gender: Standard Errors of Numbers in Thousands, 2010 and 2011
Substance Total
(2010)		 Total
(2011)		 Male
(2010)		 Male
(2011)		 Female
(2010)		 Female
(2011)
*Low precision; no estimate reported.
NOTE: Some 2010 estimates may differ from previously published estimates due to updates (see Section B.3 in Appendix B of the Results from the 2011 National Survey on Drug Use and Health: National Findings).
NOTE: Past Year Initiates are defined as persons who used the substance(s) for the first time in the 12 months prior to date of interview.
1 Illicit Drugs include marijuana/hashish, cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically. Illicit Drugs Other Than Marijuana include cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically.
2 Estimates in these designated rows do not include data from new methamphetamine initiation items added in 2007 or new methamphetamine use items added in 2005 and 2006.
3 Nonmedical use of prescription-type psychotherapeutics includes the nonmedical use of pain relievers, tranquilizers, stimulants, or sedatives and does not include over-the-counter drugs.
4 Daily Cigarette Use is defined as ever smoking every day for at least 30 days.
5 Smokeless Tobacco includes chewing tobacco or snuff.
Source: SAMHSA, Center for Behavioral Health Statistics and Quality, National Survey on Drug Use and Health, 2010 and 2011.
ILLICIT DRUGS1,2 107 115 72 62 83 95
Marijuana and Hashish 93 97 66 61 66 74
Cocaine 57 48 45 34 31 31
Crack 20 14 8 10 18 9
Heroin 24 26 19 17 15 20
Hallucinogens 61 58 44 45 41 38
LSD 39 30 25 22 27 18
PCP 11 10 9 9 6 5
Ecstasy 56 59 39 45 38 39
Inhalants 51 47 36 32 35 32
Nonmedical Use of Psychotherapeutics2,3 113 118 77 57 83 99
Pain Relievers 91 102 62 49 67 87
OxyContin® 53 49 40 37 36 32
Tranquilizers 86 90 57 46 64 77
Stimulants2 52 59 29 36 43 45
Sedatives 46 29 34 15 31 25
ILLICIT DRUGS OTHER THAN MARIJUANA1,2 109 109 69 60 85 89
CIGARETTES 81 86 57 63 54 56
Daily Cigarette Use4 57 55 42 39 36 38
SMOKELESS TOBACCO5 72 75 63 68 33 26
CIGARS 120 143 77 121 88 64
ALCOHOL 131 124 97 82 82 85
120404
Table 4.10C – Past Year Initiation of Substance Use among Persons Aged 12 or Older Who Initiated Use Prior to the Age of 18, by Gender: Standard Errors of Numbers in Thousands, 2010 and 2011
Substance Total
(2010)		 Total
(2011)		 Male
(2010)		 Male
(2011)		 Female
(2010)		 Female
(2011)
*Low precision; no estimate reported.
NOTE: Some 2010 estimates may differ from previously published estimates due to updates (see Section B.3 in Appendix B of the Results from the 2011 National Survey on Drug Use and Health: National Findings).
NOTE: Past Year Initiates are defined as persons who used the substance(s) for the first time in the 12 months prior to date of interview.
1 Illicit Drugs include marijuana/hashish, cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically. Illicit Drugs Other Than Marijuana include cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically.
2 Estimates in these designated rows do not include data from new methamphetamine initiation items added in 2007 or new methamphetamine use items added in 2005 and 2006.
3 Nonmedical use of prescription-type psychotherapeutics includes the nonmedical use of pain relievers, tranquilizers, stimulants, or sedatives and does not include over-the-counter drugs.
4 Daily Cigarette Use is defined as ever smoking every day for at least 30 days.
5 Smokeless Tobacco includes chewing tobacco or snuff.
Source: SAMHSA, Center for Behavioral Health Statistics and Quality, National Survey on Drug Use and Health, 2010 and 2011.
ILLICIT DRUGS1,2 60 59 44 41 42 43
Marijuana and Hashish 57 58 41 41 36 39
Cocaine 20 18 14 13 14 13
Crack 6 6 4 3 5 4
Heroin 9 10 6 8 7 6
Hallucinogens 38 31 27 22 26 21
LSD 16 17 11 13 12 11
PCP 6 7 3 5 6 5
Ecstasy 32 27 21 18 24 19
Inhalants 34 31 22 21 26 25
Nonmedical Use of Psychotherapeutics2,3 43 39 30 25 30 28
Pain Relievers 43 36 31 24 28 26
OxyContin® 22 17 16 12 13 13
Tranquilizers 23 26 15 17 17 19
Stimulants2 23 19 13 12 18 15
Sedatives 12 10 6 6 11 8
ILLICIT DRUGS OTHER THAN MARIJUANA1,2 54 46 36 30 37 34
CIGARETTES 55 53 41 41 38 34
Daily Cigarette Use4 29 24 22 18 19 17
SMOKELESS TOBACCO5 37 35 33 30 16 16
CIGARS 45 47 35 36 29 28
ALCOHOL 75 82 54 56 52 55
120404
Table 4.11C – Past Year Initiation of Substance Use among Persons Aged 12 or Older Who Initiated Use Prior to the Age of 21, by Gender: Standard Errors of Numbers in Thousands, 2010 and 2011
Substance Total
(2010)		 Total
(2011)		 Male
(2010)		 Male
(2011)		 Female
(2010)		 Female
(2011)
*Low precision; no estimate reported.
NOTE: Some 2010 estimates may differ from previously published estimates due to updates (see Section B.3 in Appendix B of the Results from the 2011 National Survey on Drug Use and Health: National Findings).
NOTE: Past Year Initiates are defined as persons who used the substance(s) for the first time in the 12 months prior to date of interview.
1 Illicit Drugs include marijuana/hashish, cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically. Illicit Drugs Other Than Marijuana include cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically.
2 Estimates in these designated rows do not include data from new methamphetamine initiation items added in 2007 or new methamphetamine use items added in 2005 and 2006.
3 Nonmedical use of prescription-type psychotherapeutics includes the nonmedical use of pain relievers, tranquilizers, stimulants, or sedatives and does not include over-the-counter drugs.
4 Daily Cigarette Use is defined as ever smoking every day for at least 30 days.
5 Smokeless Tobacco includes chewing tobacco or snuff.
Source: SAMHSA, Center for Behavioral Health Statistics and Quality, National Survey on Drug Use and Health, 2010 and 2011.
ILLICIT DRUGS1,2 73 83 54 55 51 58
Marijuana and Hashish 71 81 52 54 45 54
Cocaine 31 34 24 27 18 20
Crack 8 8 5 6 6 6
Heroin 15 16 10 11 12 12
Hallucinogens 50 48 37 33 30 33
LSD 27 24 21 19 15 14
PCP 11 7 9 5 6 5
Ecstasy 43 38 31 24 28 30
Inhalants 41 42 26 26 31 30
Nonmedical Use of Psychotherapeutics2,3 58 57 40 37 41 41
Pain Relievers 55 51 39 33 38 38
OxyContin® 27 24 20 15 17 18
Tranquilizers 39 38 25 26 29 28
Stimulants2 30 32 23 21 22 23
Sedatives 16 12 9 8 13 9
ILLICIT DRUGS OTHER THAN MARIJUANA1,2 71 66 48 42 50 48
CIGARETTES 74 76 54 54 48 50
Daily Cigarette Use4 49 39 39 27 28 29
SMOKELESS TOBACCO5 48 50 42 43 23 20
CIGARS 71 70 54 53 48 43
ALCOHOL 98 108 70 75 65 68
120404
Table 4.12C – Past Year Initiation of Substance Use among Persons Aged 12 to 49, by Gender: Standard Errors of Numbers in Thousands, 2010 and 2011
Substance Total
(2010)		 Total
(2011)		 Male
(2010)		 Male
(2011)		 Female
(2010)		 Female
(2011)
*Low precision; no estimate reported.
NOTE: Some 2010 estimates may differ from previously published estimates due to updates (see Section B.3 in Appendix B of the Results from the 2011 National Survey on Drug Use and Health: National Findings).
NOTE: Past Year Initiates are defined as persons who used the substance(s) for the first time in the 12 months prior to date of interview.
1 Illicit Drugs include marijuana/hashish, cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically. Illicit Drugs Other Than Marijuana include cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically.
2 Estimates in these designated rows do not include data from new methamphetamine initiation items added in 2007 or new methamphetamine use items added in 2005 and 2006.
3 Nonmedical use of prescription-type psychotherapeutics includes the nonmedical use of pain relievers, tranquilizers, stimulants, or sedatives and does not include over-the-counter drugs.
4 Daily Cigarette Use is defined as ever smoking every day for at least 30 days.
5 Smokeless Tobacco includes chewing tobacco or snuff.
Source: SAMHSA, Center for Behavioral Health Statistics and Quality, National Survey on Drug Use and Health, 2010 and 2011.
ILLICIT DRUGS1,2 97 103 65 61 75 81
Marijuana and Hashish 89 91 65 60 61 65
Cocaine 57 48 45 34 31 31
Crack 20 14 8 10 18 9
Heroin 24 26 19 17 15 20
Hallucinogens 61 58 43 45 41 38
LSD 39 30 25 22 27 18
PCP 11 10 9 9 6 5
Ecstasy 54 55 38 39 36 39
Inhalants 46 47 28 31 35 32
Nonmedical Use of Psychotherapeutics2,3 100 107 65 56 78 90
Pain Relievers 81 93 55 49 60 79
OxyContin® 47 45 39 37 27 26
Tranquilizers 78 84 54 46 56 71
Stimulants2 52 58 29 36 43 44
Sedatives 30 24 21 15 22 19
ILLICIT DRUGS OTHER THAN MARIJUANA1,2 100 101 60 60 80 81
CIGARETTES 80 84 56 61 53 55
Daily Cigarette Use4 57 54 42 38 36 38
SMOKELESS TOBACCO5 68 73 58 67 33 26
CIGARS 103 93 71 70 71 60
ALCOHOL 113 117 77 80 80 79
120404
Table 4.13D – Standard Errors of Mean Age at First Use among Past Year Initiates of Substance Use Aged 12 or Older, by Gender: 2010 and 2011
Substance Total
(2010)		 Total
(2011)		 Male
(2010)		 Male
(2011)		 Female
(2010)		 Female
(2011)
*Low precision; no estimate reported.
NOTE: Some 2010 estimates may differ from previously published estimates due to updates (see Section B.3 in Appendix B of the Results from the 2011 National Survey on Drug Use and Health: National Findings).
NOTE: Past Year Initiates are defined as persons who used the substance(s) for the first time in the 12 months prior to date of interview.
1 Illicit Drugs include marijuana/hashish, cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically. Illicit Drugs Other Than Marijuana include cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically.
2 Estimates in these designated rows do not include data from new methamphetamine initiation items added in 2007 or new methamphetamine use items added in 2005 and 2006.
3 Nonmedical use of prescription-type psychotherapeutics includes the nonmedical use of pain relievers, tranquilizers, stimulants, or sedatives and does not include over-the-counter drugs.
4 Daily Cigarette Use is defined as ever smoking every day for at least 30 days.
5 Smokeless Tobacco includes chewing tobacco or snuff.
Source: SAMHSA, Center for Behavioral Health Statistics and Quality, National Survey on Drug Use and Health, 2010 and 2011.
ILLICIT DRUGS1,2 0.82 0.82 0.99 0.23 1.24 1.39
Marijuana and Hashish 0.74 0.80 0.59 0.21 1.34 1.50
Cocaine 0.96 0.47 1.36 0.47 1.13 0.88
Crack 2.45 1.05 2.24 0.88 3.42 2.10
Heroin 1.05 1.22 1.31 1.96 1.60 1.28
Hallucinogens 0.21 0.30 0.30 0.50 0.29 0.29
LSD 0.40 0.27 0.32 0.34 0.75 0.44
PCP 0.57 0.94 0.48 1.21 1.03 1.00
Ecstasy 0.55 0.88 0.64 1.67 0.90 0.62
Inhalants 0.95 0.39 1.83 0.67 0.56 0.32
Nonmedical Use of Psychotherapeutics2,3 0.85 0.75 1.43 0.70 0.99 1.04
Pain Relievers 0.74 0.90 1.18 0.77 0.91 1.32
OxyContin® 1.45 1.62 1.43 2.00 2.51 2.60
Tranquilizers 1.08 1.00 1.38 1.10 1.53 1.40
Stimulants2 1.27 0.92 1.09 1.17 2.07 1.32
Sedatives 4.56 2.67 7.48 1.29 5.19 3.54
ILLICIT DRUGS OTHER THAN MARIJUANA1,2 0.75 0.65 1.18 0.43 0.92 1.00
CIGARETTES 0.22 0.31 0.28 0.59 0.32 0.17
Daily Cigarette Use4 0.34 0.44 0.33 0.51 0.62 0.75
SMOKELESS TOBACCO5 0.98 0.66 1.23 0.82 1.26 0.45
CIGARS 0.72 1.46 0.81 2.38 1.19 0.79
ALCOHOL 0.62 0.22 1.20 0.11 0.31 0.40
120508
Table 4.13P – P Values from Tests of Differences of Mean Age at First Use among Past Year Initiates of Substance Use Aged 12 or Older, by Gender: 2011 Versus 2010
Substance Total
(2010)		 Total
(2011)		 Male
(2010)		 Male
(2011)		 Female
(2010)		 Female
(2011)
*Low precision; no estimate reported.
NOTE: Some 2010 estimates used in the comparisons may differ from previously published estimates due to updates (see Section B.3 in Appendix B of the Results from the 2011 National Survey on Drug Use and Health: National Findings).
NOTE: Past Year Initiates are defined as persons who used the substance(s) for the first time in the 12 months prior to date of interview.
1 Illicit Drugs include marijuana/hashish, cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically. Illicit Drugs Other Than Marijuana include cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically.
2 Estimates in these designated rows do not include data from new methamphetamine initiation items added in 2007 or new methamphetamine use items added in 2005 and 2006.
3 Nonmedical use of prescription-type psychotherapeutics includes the nonmedical use of pain relievers, tranquilizers, stimulants, or sedatives and does not include over-the-counter drugs.
4 Daily Cigarette Use is defined as ever smoking every day for at least 30 days.
5 Smokeless Tobacco includes chewing tobacco or snuff.
Source: SAMHSA, Center for Behavioral Health Statistics and Quality, National Survey on Drug Use and Health, 2010 and 2011.
ILLICIT DRUGS1,2 0.4272   0.0858   0.8141  
Marijuana and Hashish 0.5053   0.2794   0.6641  
Cocaine 0.2920   0.1743   0.9553  
Crack 0.1355   0.3625   0.2108  
Heroin 0.6557   0.8353   0.5242  
Hallucinogens 0.2483   0.2318   0.7865  
LSD 0.3973   0.9869   0.2593  
PCP 0.8548   0.5499   0.6082  
Ecstasy 0.5712   0.3982   0.7795  
Inhalants 0.5822   0.7267   0.3451  
Nonmedical Use of Psychotherapeutics2,3 0.4081   0.0354   0.7277  
Pain Relievers 0.6534   0.1393   0.1741  
OxyContin® 0.6632   0.7025   0.4008  
Tranquilizers 0.4251   0.3022   0.6979  
Stimulants2 0.3527   0.4945   0.4916  
Sedatives 0.3106   0.0731   0.9920  
ILLICIT DRUGS OTHER THAN MARIJUANA1,2 0.5709   0.1681   0.8881  
CIGARETTES 0.9193   0.4430   0.2438  
Daily Cigarette Use4 0.9825   0.3023   0.4230  
SMOKELESS TOBACCO5 0.7784   0.9073   0.4809  
CIGARS 0.7262   0.1995   0.0658  
ALCOHOL 0.2366   0.1431   0.6865  
120404
Table 4.14D – Standard Errors of Mean Age at First Use among Past Year Initiates of Substance Use Aged 12 or Older Who Initiated Use Prior to the Age of 18, by Gender: 2010 and 2011
Substance Total
(2010)		 Total
(2011)		 Male
(2010)		 Male
(2011)		 Female
(2010)		 Female
(2011)
*Low precision; no estimate reported.
NOTE: Some 2010 estimates may differ from previously published estimates due to updates (see Section B.3 in Appendix B of the Results from the 2011 National Survey on Drug Use and Health: National Findings).
NOTE: Past Year Initiates are defined as persons who used the substance(s) for the first time in the 12 months prior to date of interview.
1 Illicit Drugs include marijuana/hashish, cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically. Illicit Drugs Other Than Marijuana include cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically.
2 Estimates in these designated rows do not include data from new methamphetamine initiation items added in 2007 or new methamphetamine use items added in 2005 and 2006.
3 Nonmedical use of prescription-type psychotherapeutics includes the nonmedical use of pain relievers, tranquilizers, stimulants, or sedatives and does not include over-the-counter drugs.
4 Daily Cigarette Use is defined as ever smoking every day for at least 30 days.
5 Smokeless Tobacco includes chewing tobacco or snuff.
Source: SAMHSA, Center for Behavioral Health Statistics and Quality, National Survey on Drug Use and Health, 2010 and 2011.
ILLICIT DRUGS1,2 0.06 0.05 0.08 0.07 0.09 0.08
Marijuana and Hashish 0.06 0.05 0.08 0.07 0.08 0.07
Cocaine 0.12 0.12 0.14 0.17 0.19 0.17
Crack 0.25 0.31 * 0.30 0.34 0.44
Heroin 0.44 0.51 * 0.28 0.65 0.78
Hallucinogens 0.08 0.08 0.12 0.08 0.12 0.11
LSD 0.19 0.14 0.25 0.15 0.29 0.23
PCP 0.25 0.25 0.42 0.39 0.27 0.31
Ecstasy 0.09 0.09 0.15 0.10 0.13 0.13
Inhalants 0.11 0.10 0.15 0.13 0.15 0.15
Nonmedical Use of Psychotherapeutics2,3 0.07 0.07 0.11 0.09 0.09 0.11
Pain Relievers 0.07 0.08 0.11 0.08 0.09 0.12
OxyContin® 0.13 0.12 0.15 0.20 0.20 0.16
Tranquilizers 0.10 0.10 0.15 0.14 0.14 0.14
Stimulants2 0.13 0.19 0.21 0.17 0.17 0.28
Sedatives 0.30 0.23 0.42 0.22 0.40 0.28
ILLICIT DRUGS OTHER THAN MARIJUANA1,2 0.07 0.07 0.09 0.08 0.10 0.10
CIGARETTES 0.06 0.07 0.08 0.10 0.08 0.08
Daily Cigarette Use4 0.09 0.09 0.12 0.11 0.13 0.13
SMOKELESS TOBACCO5 0.08 0.08 0.10 0.09 0.13 0.17
CIGARS 0.06 0.06 0.08 0.09 0.09 0.09
ALCOHOL 0.04 0.04 0.06 0.06 0.05 0.06
120508
Table 4.14P – P Values from Tests of Differences of Mean Age at First Use among Past Year Initiates of Substance Use Aged 12 or Older Who Initiated Use Prior to the Age of 18, by Gender: 2011 Versus 2010
Substance Total
(2010)		 Total
(2011)		 Male
(2010)		 Male
(2011)		 Female
(2010)		 Female
(2011)
*Low precision; no estimate reported.
NOTE: Some 2010 estimates used in the comparisons may differ from previously published estimates due to updates (see Section B.3 in Appendix B of the Results from the 2011 National Survey on Drug Use and Health: National Findings).
NOTE: Past Year Initiates are defined as persons who used the substance(s) for the first time in the 12 months prior to date of interview.
1 Illicit Drugs include marijuana/hashish, cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically. Illicit Drugs Other Than Marijuana include cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically.
2 Estimates in these designated rows do not include data from new methamphetamine initiation items added in 2007 or new methamphetamine use items added in 2005 and 2006.
3 Nonmedical use of prescription-type psychotherapeutics includes the nonmedical use of pain relievers, tranquilizers, stimulants, or sedatives and does not include over-the-counter drugs.
4 Daily Cigarette Use is defined as ever smoking every day for at least 30 days.
5 Smokeless Tobacco includes chewing tobacco or snuff.
Source: SAMHSA, Center for Behavioral Health Statistics and Quality, National Survey on Drug Use and Health, 2010 and 2011.
ILLICIT DRUGS1,2 0.8798   0.9501   0.8552  
Marijuana and Hashish 0.3332   0.9396   0.1277  
Cocaine 0.6588   0.9338   0.6052  
Crack 0.6109   *   0.3672  
Heroin 0.6727   *   0.2425  
Hallucinogens 0.0488   0.0349   0.5215  
LSD 0.4497   0.0797   0.4961  
PCP 0.3542   0.2966   0.5678  
Ecstasy 0.1216   0.0346   0.9634  
Inhalants 0.1659   0.1609   0.4673  
Nonmedical Use of Psychotherapeutics2,3 0.7256   0.4289   0.9589  
Pain Relievers 0.4468   0.2542   0.8203  
OxyContin® 0.4522   0.2933   0.8874  
Tranquilizers 0.1493   0.1133   0.4041  
Stimulants2 0.0439   0.4396   0.0481  
Sedatives 0.6763   0.1300   0.9127  
ILLICIT DRUGS OTHER THAN MARIJUANA1,2 0.1486   0.4998   0.1400  
CIGARETTES 0.6763   0.6185   0.9415  
Daily Cigarette Use4 0.4872   0.3975   0.7421  
SMOKELESS TOBACCO5 0.5292   0.8443   0.3008  
CIGARS 0.8499   0.5948   0.3233  
ALCOHOL 0.8895   0.8234   0.9475  
120404
Table 4.15D – Standard Errors of Mean Age at First Use among Past Year Initiates of Substance Use Aged 12 or Older Who Initiated Use Prior to the Age of 21, by Gender: 2010 and 2011
Substance Total
(2010)		 Total
(2011)		 Male
(2010)		 Male
(2011)		 Female
(2010)		 Female
(2011)
*Low precision; no estimate reported.
NOTE: Some 2010 estimates may differ from previously published estimates due to updates (see Section B.3 in Appendix B of the Results from the 2011 National Survey on Drug Use and Health: National Findings).
NOTE: Past Year Initiates are defined as persons who used the substance(s) for the first time in the 12 months prior to date of interview.
1 Illicit Drugs include marijuana/hashish, cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically. Illicit Drugs Other Than Marijuana include cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically.
2 Estimates in these designated rows do not include data from new methamphetamine initiation items added in 2007 or new methamphetamine use items added in 2005 and 2006.
3 Nonmedical use of prescription-type psychotherapeutics includes the nonmedical use of pain relievers, tranquilizers, stimulants, or sedatives and does not include over-the-counter drugs.
4 Daily Cigarette Use is defined as ever smoking every day for at least 30 days.
5 Smokeless Tobacco includes chewing tobacco or snuff.
Source: SAMHSA, Center for Behavioral Health Statistics and Quality, National Survey on Drug Use and Health, 2010 and 2011.
ILLICIT DRUGS1,2 0.08 0.08 0.10 0.10 0.11 0.11
Marijuana and Hashish 0.08 0.08 0.11 0.10 0.10 0.11
Cocaine 0.14 0.13 0.18 0.16 0.22 0.21
Crack 0.32 0.35 0.46 0.41 0.43 0.51
Heroin 0.36 0.41 0.53 0.39 0.52 0.78
Hallucinogens 0.09 0.10 0.13 0.12 0.14 0.16
LSD 0.19 0.17 0.23 0.19 0.29 0.28
PCP 0.52 0.29 0.52 0.39 0.44 0.43
Ecstasy 0.11 0.11 0.16 0.15 0.16 0.16
Inhalants 0.17 0.20 0.20 0.21 0.25 0.27
Nonmedical Use of Psychotherapeutics2,3 0.09 0.09 0.13 0.12 0.12 0.13
Pain Relievers 0.10 0.10 0.14 0.12 0.14 0.15
OxyContin® 0.16 0.16 0.21 0.23 0.21 0.22
Tranquilizers 0.13 0.13 0.18 0.20 0.19 0.16
Stimulants2 0.16 0.20 0.20 0.22 0.21 0.31
Sedatives 0.34 0.33 0.58 0.53 0.40 0.38
ILLICIT DRUGS OTHER THAN MARIJUANA1,2 0.09 0.09 0.11 0.11 0.14 0.14
CIGARETTES 0.06 0.07 0.09 0.10 0.09 0.09
Daily Cigarette Use4 0.11 0.10 0.13 0.12 0.17 0.15
SMOKELESS TOBACCO5 0.11 0.10 0.12 0.12 0.19 0.18
CIGARS 0.07 0.07 0.08 0.09 0.13 0.10
ALCOHOL 0.05 0.05 0.08 0.07 0.07 0.07
120508
Table 4.15P – P Values from Tests of Differences of Mean Age at First Use among Past Year Initiates of Substance Use Aged 12 or Older Who Initiated Use Prior to the Age of 21, by Gender: 2011 Versus 2010
Substance Total
(2010)		 Total
(2011)		 Male
(2010)		 Male
(2011)		 Female
(2010)		 Female
(2011)
*Low precision; no estimate reported.
NOTE: Some 2010 estimates used in the comparisons may differ from previously published estimates due to updates (see Section B.3 in Appendix B of the Results from the 2011 National Survey on Drug Use and Health: National Findings).
NOTE: Past Year Initiates are defined as persons who used the substance(s) for the first time in the 12 months prior to date of interview.
1 Illicit Drugs include marijuana/hashish, cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically. Illicit Drugs Other Than Marijuana include cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically.
2 Estimates in these designated rows do not include data from new methamphetamine initiation items added in 2007 or new methamphetamine use items added in 2005 and 2006.
3 Nonmedical use of prescription-type psychotherapeutics includes the nonmedical use of pain relievers, tranquilizers, stimulants, or sedatives and does not include over-the-counter drugs.
4 Daily Cigarette Use is defined as ever smoking every day for at least 30 days.
5 Smokeless Tobacco includes chewing tobacco or snuff.
Source: SAMHSA, Center for Behavioral Health Statistics and Quality, National Survey on Drug Use and Health, 2010 and 2011.
ILLICIT DRUGS1,2 0.3043   0.3918   0.5013  
Marijuana and Hashish 0.8231   0.9843   0.7245  
Cocaine 0.0130   0.0362   0.1670  
Crack 0.8990   0.7189   0.7508  
Heroin 0.7485   0.5847   0.8529  
Hallucinogens 0.0884   0.6914   0.0181  
LSD 0.5058   0.7251   0.5365  
PCP 0.0034   0.0000   0.5260  
Ecstasy 0.3856   0.6136   0.0569  
Inhalants 0.3725   0.2094   0.7951  
Nonmedical Use of Psychotherapeutics2,3 0.9737   0.8655   0.6970  
Pain Relievers 0.9119   0.7766   0.7715  
OxyContin® 0.4190   0.5066   0.7220  
Tranquilizers 0.0127   0.0567   0.0644  
Stimulants2 0.7974   0.8300   0.9589  
Sedatives 0.4857   0.8625   0.3320  
ILLICIT DRUGS OTHER THAN MARIJUANA1,2 0.4009   0.7868   0.1554  
CIGARETTES 0.4485   0.5101   0.0595  
Daily Cigarette Use4 0.9807   0.9502   0.8787  
SMOKELESS TOBACCO5 0.5171   0.4982   0.8871  
CIGARS 0.4361   0.4649   0.7231  
ALCOHOL 0.2223   0.2190   0.6258  
120404
Table 4.16D – Standard Errors of Mean Age at First Use among Past Year Initiates of Substance Use Aged 12 to 49, by Gender: 2010 and 2011
Substance Total
(2010)		 Total
(2011)		 Male
(2010)		 Male
(2011)		 Female
(2010)		 Female
(2011)
*Low precision; no estimate reported.
NOTE: Some 2010 estimates may differ from previously published estimates due to updates (see Section B.3 in Appendix B of the Results from the 2011 National Survey on Drug Use and Health: National Findings).
NOTE: Past Year Initiates are defined as persons who used the substance(s) for the first time in the 12 months prior to date of interview.
1 Illicit Drugs include marijuana/hashish, cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically. Illicit Drugs Other Than Marijuana include cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically.
2 Estimates in these designated rows do not include data from new methamphetamine initiation items added in 2007 or new methamphetamine use items added in 2005 and 2006.
3 Nonmedical use of prescription-type psychotherapeutics includes the nonmedical use of pain relievers, tranquilizers, stimulants, or sedatives and does not include over-the-counter drugs.
4 Daily Cigarette Use is defined as ever smoking every day for at least 30 days.
5 Smokeless Tobacco includes chewing tobacco or snuff.
Source: SAMHSA, Center for Behavioral Health Statistics and Quality, National Survey on Drug Use and Health, 2010 and 2011.
ILLICIT DRUGS1,2 0.50 0.39 0.48 0.23 0.84 0.68
Marijuana and Hashish 0.48 0.18 0.59 0.21 0.76 0.29
Cocaine 0.96 0.47 1.36 0.47 1.13 0.88
Crack 2.45 1.05 2.24 0.88 3.42 2.10
Heroin 1.05 1.22 1.31 1.96 1.60 1.28
Hallucinogens 0.21 0.30 0.30 0.50 0.29 0.29
LSD 0.40 0.27 0.32 0.34 0.75 0.44
PCP 0.57 0.94 0.48 1.21 1.03 1.00
Ecstasy 0.44 0.44 0.64 0.62 0.62 0.62
Inhalants 0.35 0.33 0.41 0.53 0.56 0.32
Nonmedical Use of Psychotherapeutics2,3 0.56 0.60 0.71 0.70 0.82 0.86
Pain Relievers 0.45 0.72 0.65 0.77 0.62 1.08
OxyContin® 0.97 1.36 1.27 2.00 1.46 1.59
Tranquilizers 0.74 0.83 1.12 1.10 1.01 1.13
Stimulants2 1.27 0.88 1.09 1.17 2.07 1.25
Sedatives 2.01 1.83 2.48 1.29 2.99 2.76
ILLICIT DRUGS OTHER THAN MARIJUANA1,2 0.48 0.49 0.47 0.43 0.77 0.80
CIGARETTES 0.21 0.13 0.28 0.19 0.30 0.17
Daily Cigarette Use4 0.34 0.44 0.33 0.51 0.62 0.75
SMOKELESS TOBACCO5 0.51 0.60 0.54 0.75 1.26 0.45
CIGARS 0.37 0.33 0.53 0.36 0.52 0.58
ALCOHOL 0.16 0.13 0.12 0.11 0.29 0.22
120508
Table 4.16P – P Values from Tests of Differences of Mean Age at First Use among Past Year Initiates of Substance Use Aged 12 to 49, by Gender: 2011 Versus 2010
Substance Total
(2010)		 Total
(2011)		 Male
(2010)		 Male
(2011)		 Female
(2010)		 Female
(2011)
*Low precision; no estimate reported.
NOTE: Some 2010 estimates used in the comparisons may differ from previously published estimates due to updates (see Section B.3 in Appendix B of the Results from the 2011 National Survey on Drug Use and Health: National Findings).
NOTE: Past Year Initiates are defined as persons who used the substance(s) for the first time in the 12 months prior to date of interview.
1 Illicit Drugs include marijuana/hashish, cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically. Illicit Drugs Other Than Marijuana include cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used nonmedically.
2 Estimates in these designated rows do not include data from new methamphetamine initiation items added in 2007 or new methamphetamine use items added in 2005 and 2006.
3 Nonmedical use of prescription-type psychotherapeutics includes the nonmedical use of pain relievers, tranquilizers, stimulants, or sedatives and does not include over-the-counter drugs.
4 Daily Cigarette Use is defined as ever smoking every day for at least 30 days.
5 Smokeless Tobacco includes chewing tobacco or snuff.
Source: SAMHSA, Center for Behavioral Health Statistics and Quality, National Survey on Drug Use and Health, 2010 and 2011.
ILLICIT DRUGS1,2 0.1472   0.2157   0.2501  
Marijuana and Hashish 0.0684   0.2794   0.1305  
Cocaine 0.2920   0.1743   0.9553  
Crack 0.1355   0.3625   0.2108  
Heroin 0.6557   0.8353   0.5242  
Hallucinogens 0.2483   0.2318   0.7865  
LSD 0.3973   0.9869   0.2593  
PCP 0.8548   0.5499   0.6082  
Ecstasy 0.8540   0.8575   0.6603  
Inhalants 0.8565   0.2514   0.3451  
Nonmedical Use of Psychotherapeutics2,3 0.9739   0.5932   0.8454  
Pain Relievers 0.3593   0.9235   0.3071  
OxyContin® 0.9933   0.4629   0.3379  
Tranquilizers 0.9750   0.7494   0.8683  
Stimulants2 0.5181   0.4945   0.7103  
Sedatives 0.5791   0.1287   0.9442  
ILLICIT DRUGS OTHER THAN MARIJUANA1,2 0.8883   0.9953   0.8068  
CIGARETTES 0.4589   0.8366   0.3886  
Daily Cigarette Use4 0.9825   0.3023   0.4230  
SMOKELESS TOBACCO5 0.5354   0.3120   0.4809  
CIGARS 0.0781   0.1241   0.4108  
ALCOHOL 0.7506   0.5425   0.9348  

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