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. 2017;128:112–130.

TABLE 1.

2015 Prevalence of Use, New Initiation, and Severe Disorders by Substance

Type of Drug Used in Past Year, n (%) Initiated in Past Year, n (%) Substance Use Disordera in Past Year, n (%)
Heavy alcohol drinkingb 16.3 (23.0) 4.7 (1.8) 17.0 (6.4)
Marijuana 35.0 (13.2) 2.6 (1.0) 4.2 (1.6)
Opioids (heroin and prescription drugs) 11.2 (4.2) 1.6 (0.6) 2.5 (1.1)
Sedatives/tranquilizers 6.0 (2.3) 1.3 (0.5) 0.6 (0.3)
Stimulants including methamphetamine 3.7 (1.4) 0.7 (0.3) 0.5 (0.2)
Hallucinogens 4.3 (1.6) 0.9 (0.3) 0.2 (0.1)
Cocaine 4.6 (1.7) 0.9 (0.3) 0.9 (0.3)
Any of the above except alcohol 44.0 (17.0) 7.8 (2.9) 21.4 (8.1)

Numbers are in millions and represent 265 million individuals 12 years of age and older.

a

Met DSM-IV criteria for Abuse or Dependence (approximates DSM-5 diagnosis of “Substance Use Disorder”).

b

Drinking 5 or more drinks for males and 4 or more drinks for females in one occasion (2 to 3 hours) 5 or more times in the past year.

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