Biostatistical perspectives in the epidemiology of narcotic abuse.
D000206:Actuarial Analysis; D004812:Epidemiologic Methods; D006801:Humans; D008137:Longitudinal Studies; D008962:Models, Theoretical; D012107:Research Design; D012494:Sampling Studies; D013223:Statistics as Topic; D019966:Substance-Related Disorders / Q000453:epidemiology*; D011795:Surveys and Questionnaires