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| TABLE 3.4 Prevalence of Drug Use and Dependencea in the General Population |
| Drug Category | Proportion That Have Ever Used (%) | Proportion of Users That Ever Became Dependent (%) |
| Tobacco | 76 | 32 |
| Alcohol | 92 | 15 |
| Marijuana (including hashish) | 46b | 9 |
| Anxiolytics (including sedatives and hypnotic drugs) | 13 | 9 |
| Cocaine | 16 | 17 |
| Heroin | 2 | 23 |
bThe percentage of people who ever used marijuana is higher than that reported by the National Household Survey on Drug Abuse (32%), probably due to different survey methods (for discussion, see Kandel, 199276). SOURCE: Adapted from Table 2 in Anthony and co-workers (1994).8 |