Measuring Ages at Reproductive Health Transitions • Lawrence B. Finer, Alan Guttmacher Institute ; Jacqueline E. Darroch, Alan Guttmacher Institute

Trends in Age at First Sex: An Application of Survival Analysis Techniques to Survey Data from Africa • Basia Zaba, London School of Hygiene and Tropical Medicine ; Elizabeth Pisani, Family Health International

Premarital Sex in Vietnam: Is the Current Concern with Adolescent Reproductive Health Warranted? • Barbara Mensch, Population Council ; Wesley Clark, Population Council ; Nguyen Anh Dang, National Center for Social Sciences and Humanities of Vietnam (NCSSH)

Reproductive Health Risk and Protective Behaviors among Adolescents in Kwazulu Natal • Ntsiki Manzini, University of Natal, Durban