Does Timing of Orphanhood and HIV Prevalence Matter? A Look at Orphans’ Transitions to Sexual Debut and Marriage in Four Sub-Saharan African Countries • Sophia Chae, University of Pennsylvania

Meanings and Timing of Leaving Home for Young People in the Slums of Nairobi • Thaddaeus Egondi, African Population and Health Research Center (APHRC) ; Donatien Beguy, African Population and Health Research Center (APHRC) ; Caroline Kabiru, African Population and Health Research Center (APHRC) ; Kanyiva Muindi, African Population and Health Research Center (APHRC) ; Chi-Chi Undie, Population Council

Sibling Relationships during the Transition to Adulthood in Malawi • Jasmine Fledderjohann, Pennsylvania State University ; Jenny Trinitapoli, Pennsylvania State University ; Sara E. Yeatman, University of Colorado at Denver

Migration Experience and Sexual Debut in Urban Kenya: An Event History Analysis • Nancy Luke, Brown University ; Hongwei Xu, Brown University ; Blessing Mberu, African Population and Health Research Center (APHRC) ; Rachel E. Goldberg, Brown University