Study 1
Composite Delinquency
There was no statistically significant difference between girls in the treatment group and girls in the control group in composite delinquency (the average of delinquent behavior and association with delinquent peers) at the 36-month follow-up.
Delinquent Behavior
Girls in the treatment group reported committing fewer delinquent behaviors, compared with girls in the control group, at the 36-month follow-up. This difference was statistically significant.
Association with Delinquent Peers
There was no statistically significant difference between girls in the treatment group and girls in the control group in association with friends involved in delinquent acts at the 36-month follow-up.
Composite Substance Use
Girls in the treatment group reported less-frequent composite substance use (the average of tobacco, alcohol, and marijuana use) in the past year, compared with girls in the control group, at the 36-month follow-up. This difference was statistically significant.
Alcohol Use
There was no statistically significant difference between girls in the treatment group and girls in the control group in alcohol use at the 36-month follow-up.
Marijuana Use
Girls in the treatment group reported lower levels of marijuana use in the past year, compared with girls in the control group, at the 36-month follow-up. This difference was statistically significant.
Tobacco Use
Kim and Leve (2011) found that girls in the KEEP SAFE treatment group reported lower levels of tobacco use in the past year, compared with girls in the control group, at the 36-month follow-up. This difference was statistically significant.