"The Youth Risk Behavior Surveillance System (YRBSS) monitors six categories of priority health-risk behaviors among youth and young adults: behaviors that contribute to unintentional and intentional injuries, tobacco use, alcohol and other drug use, sexual behaviors, unhealthy dietary behaviors, and physical inactivity. The YRBSS includes both a national school-based survey conducted by CDC [Centers for Disease Control and Prevention] and state and local school-based surveys conducted by state and local education agencies. This report summarizes results from the national survey, 35 state surveys, and 16 local surveys conducted among high school students from February through May 1995."
Morbidity and Mortality Weekly Report: http://www.cdc.gov/mmwr/index.html
Morbidity and Mortality Weekly Report, Surveillance Summaries (September 27, 1996), v.45, no.SS-4, p.1-84