From PEDIATRICS Vol. 123 No. 1 January 2009, pp. e110-e120 (doi:10.1542/peds.2008-0407): Patient Teenagers? A Comparison of the Sexual Behavior of Virginity Pledgers and Matched Nonpledgers, Janet Elise Rosenbaum, PhD, AM; Health Policy PhD Program, Harvard University, Cambridge, Massachusetts; Department of Population, Family, and Reproductive Health, Johns Hopkins Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland.