Family risk factors versus peer risk factors for drug abuse. A longitudinal study of an African American urban community sample.

This study compared the influence of family problems with influence of deviant and delinquent social behavior and peer relationships up to the time of the 16th birthday as risk factors for substance use, for lifetime up to age 26. Control variables for the analysis were available from the National Collaborative project's longitudinal data file, collected from time of birth, on the African American community study sample (N = 380). A key finding was that the social behavior and peer relationship problems accounted for 18.8% of the additional variance in later degree of substance use, whereas the family problems accounted for only 5.1% of the additional variance in later degree of substance use.