The study followed 662 students from four public middle schools that serve low-income African American communities in a city in northeastern U.S. Recruited between September 2001 and March 2002, the students were randomly selected by a computer to either take an 8-hour abstinence-only intervention, 8-hour safer sex-only intervention, 8-hour comprehensive intervention, a 12-hour comprehensive intervention, or an 8-hour health promotion control intervention.
