3.2.4. Other community settings
Two other RCTs were conducted in community settings outside
schools and health care organizations. Marsden et al. (2006)
randomly assigned 342 London youth ages 16–22 years old who
reported using cocaine or ecstasy and were recruited from the
community to either assessment only or a 45–60 minute BI session
conducted by a counselor trained in MI. No between-group differences
were found in drinking or drug use at the 6-month follow-up.
In the United States, Peterson et al. (2006) conducted a threegroup
RCT among 285 homeless youth ages 14–19 in Seattle,
Washington. Participants who reported binge drinking and/or using
illicit drugs in the 30 days prior to study enrollment were randomly
assigned to either a “no baseline assessment” condition, an assessment
only condition, or a treatment condition involving a BI
conducted by a counselor trained in MI. The BI group showed greater
reduction in illicit drug use (though not cannabis) compared to
assessment only group at 1-month but not 3-month follow-up. There
were no between-group differences in alcohol use, binge drinking or
marijuana use at either follow-up point.