Researchers at The National Development and Research Institutes, Inc. (NDRI), Andrew Golub, Hilary Liberty, and Bruce Johnson examined reported use of various drugs by arrestees interviewed at 37 locations across the nation as part of the Arrestee Drug Abuse Monitoring (ADAM) Program. This program, financed by the Federal government, both asks arrestees to report on their recent drug use and also tests their use with a urine sample. They found that responses often reflect differences in how willing the respondents were to disclose their use. This "willingness-to-disclose" varies depending on the type of drug questioned, location in the country, and population groups.
Arrestees were much more willing to disclose marijuana use than use of other drugs. Nearly all actual marijuana users in one city, as documented by urine testing, self-reported recent use 93% of the time. In another city, disclosure of marijuana use was 68%. Disclosure of cocaine and crack use was significantly lower, ranging from 28% up to 70%, depending on the location. There were also differences in disclosure associated with age, race, ethnicity, gender, and variation depending on the year of the survey.
These findings raise serious questions about the nation's use of drug survey data. Author Bruce Johnson noted: "Users of such surveys need to continually ask whether reported differences in drug use reflect actual differences in use or differences in willingness-to-disclose use." Based on this study, Gol
Contact: Patrice Barron
National Development & Research Institutes