“…Using data from surveys of adolescent males, studies have explored the effects of young men's family background, education, and other characteristics on whether they became a father or had a partner become pregnant (Hanson, Morrison, and Ginsburg, 1989;Ku, Sonenstein, and Pleck, 1993;Robbins, Kaplan, and Martins, 1985;Thornberry, Smith, and Howard, 1997). However, adolescent males do not cause all teenage pregnancies, and little is known about older sexual partners of teenaged women (Darroch, Landry, and Oslak, 1999).…”