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Substance Use at Age 16 Years (%). Substance Use: Age 16 Years Alcohol Cannabis Cocaine Hallucinogens Amphetamines Heroin Other Nonprescription Drugs
Contexts in source publication
Context 1
... use. Frequencies of alcohol and drug use, including cannabis, cocaine, amphetamine, hallucinogens, heroin, and other nonprescription drugs, were measured through self-report questionnaires at 16 years ( Table 1). 46 All substance use measures assessed age of first use ( Table 2) and frequency of consumption during the past 12 months, via a 7-point scale (1 ¼ "have not consumed during the past 12 months" to 7 ¼ "consumed every day"). ...Context 2
... All substance use measures assessed age of first use ( Table 2) and frequency of consumption during the past 12 months, via a 7-point scale (1 ¼ "have not consumed during the past 12 months" to 7 ¼ "consumed every day"). Since illicit substance use was minimal (< 10% of participants, see Table 1), we only included measures on alcohol and cannabis use in our analyses. Self-report age of onset of substance use was only available for alcohol and for all substances combined. ...Context 3
... history of substance use problems (FHþ). A subset of DSM-IV criteria for drug and alcohol use disorders was evaluated in both parents using a self-report questionnaire (Supplementary Table 1) when participants were 17 months (for father) and 30 months (for mother). FHþ was defined as having at least 1 parent meeting at least 1 DSM-IV criterion for either alcohol or drug dependence. ...