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.