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Concordance in Perceived Partner Types and Unprotected Sex among Couples of Adolescents and Young Adults: Analysis of reciprocally nominated heterosexual dyads
  1. Michiyo Yamazaki1,*,
  2. Donna Strobino2,
  3. Jonathan Ellen1
  1. 1 The johns Hopkins University School of Medicine, United States;
  2. 2 The Johns Hopkins University Broomberg School of Public Health, United States
  1. Correspondence to: Michiyo Yamazaki, Pediatrics, The Johns Hopkins University School of Medicine, 5200 Eastern Avenue Suite 4200, Baltimore, 21224, United States; myamaza1{at}


The objectives of this study were to examine the reciprocity of adolescents’ heterosexual relationships, the concordance in perceived partner types reported by partners among reciprocal dyads, and the association between dyad-level unprotected sex and relationship types.

Data were obtained from the Bayview Network Study (CA), designed to examine the prevalence of STI risk behaviors and transmission patterns among adolescents between July 2000 and October 2001. A total of 782 unique heterosexual relationships were identified. Less than one third were reciprocally nominated heterosexual dyads. A total of first observed 211 reciprocal dyads were reported by 198 females and 179 males. Agreement on partner type between adolescents and their sex partners among reciprocal dyads was poor, although main-main concordant relationships were the most frequent group (66.4%). Multivariate logistic regression analysis showed that male partner’s age and length of relationship significantly increased the odds of a couples’ unprotected sex (adjusted odds ratio (AOR) =1.4, and1.2, p<0.05), and male partner’s frequency of sex significantly decreased the odds of unprotected sex (AOR = 0.69, p<0.05). The concordance of partner type by two sex partners was not significantly related to couples’ unprotected sex when other covariates were taken into account.

This unique study advances knowledge about individuals’ perception of their heterosexual partner types in reported relationships: the majority of adolescent couples were not reciprocally acknowledged, and whether or not two sex partners agreed on partner type did not change the odds of a couples’ unprotected sex even among reciprocal dyads.

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