"As was the case from 2002 through 2010, the rate of substance dependence or abuse for males aged 12 or older in 2011 was about twice as high as the rate for females. For males in 2011, the rate was 10.4 percent, which decreased from 11.7 percent in 2010 (Figure 7.6). For females, it was 5.7 percent in 2011, which did not differ from the rate of 6.0 percent in 2010. Among youths aged 12 to 17, the rate of substance dependence or abuse among males was not different from the rate among females in 2011 (6.9 percent for each)."
Substance Abuse and Mental Health Services Administration, Results from the 2011 National Survey on Drug Use and Health: Summary of National Findings, NSDUH Series H-44, HHS Publication No. (SMA) 12-4713. Rockville, MD: Substance Abuse and Mental Health Services Administration, 2012, p. 78.
http://www.samhsa.gov/data/NS…
