Methods to decrease attrition in longitudinal studies with adolescents.

Abstract

A summary of methods to decrease attrition in longitudinal school-based studies conducted with adolescents beginning junior high schools or middle schools is presented. These include collection of contact information about students, additional days to collect data from absentee students, data collection in new high schools once students graduate from junior high schools or middle schools, sending questionnaires by mail, and conducting telephone or home interviews.