1. Women with multiple sexual partners in the last 12 month are 3.2 times more likely to report condom use;Contraceptive and Sexual Practices Among Single Women with an Unplanned Pregnancy: Partner Influences, 25 FAM. PLANNING PERSP
2. Hookups": Characteristics andd Correlates of College Students' Spontaneous and Anonymous Sexual Experiences, 37;Elizabeth L Paul;J. SEX RES,1997
3. Youth Risk Behavior Surveillance -United States;Laura Kann;47 MORBIDITY & MORTALITY WKLY. REP,1997