The primary objective of the 2002-2003 Indonesia Young Adult Reproductive Health Survey (IYARHS) is to provide policymakers and program managers with data on knowledge, attitudes, and behavior of young adults about human reproduction, relationships, HIV/AIDS and other sexually transmitted infections. Being the first nationally representative survey of this kind in Indonesia, findings of the survey will also provide program managers with baseline data on these issues. Specifically, the 2002-2003 IYARHS was designed to: • Measure the level of knowledge of young adults about reproductive health issues • Examine the attitudes of young adults on various issues in reproductive health • Measure the level of tobacco use, alcohol consumption, and drug use • Measure the level of sexual activity among young adults • Explore young adults’ awareness of HIV/AIDS and other sexually transmitted infections.