Adolescents also were asked how often they used marijuana, sedatives, stimulants, inhalants, hallucinogens, cocaine or crack, and opiates (nonmedical use only; e.g., heroin, morphine, etc.) in the last 6 months. The 8 response options ranged from 0 (never) to 7 (every day). A summed score of responses was calculated with greater scores indicating greater drug use. In this sample, 17% of respondents reported using at least one drug. This distribution also was positively skewed and was logarithmically transformed for analyses.
