The Johns Hopkins University School of Medicine, Department of Pediatrics, Baltimore, MD 21224, USA.
Sex Transm Infect. 2010 Apr;86(2):141-7. doi: 10.1136/sti.2009.037754. Epub 2009 Nov 1.
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 (San Francisco, California, USA), designed to examine the prevalence of STI risk behaviours and transmission patterns among adolescents between July 2000 and October 2001. For reciprocal dyads, Kappa statistics was used to determine the level of agreement between partner types reported by two sex partners. Multivariate logistic regressions were used to determine the odds of couple's unprotected sex.
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%). Male partner's age and length of relationship significantly increased the odds of a couple's unprotected sex (adjusted OR=1.4, and 1.2, p<0.05), and male partner's frequency of sex significantly decreased the odds (adjusted OR=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 couple's unprotected sex even among reciprocal dyads.
本研究旨在考察青少年异性关系的互惠性、互惠对体报告的感知伴侣类型的一致性，以及个体对伴侣类型的感知与性关系类型和无保护性行为之间的关联。
数据来自 Bayview 网络研究（美国加利福尼亚州旧金山），旨在研究 2000 年 7 月至 2001 年 10 月期间青少年性传播感染风险行为和传播模式的流行率。对于互惠对体，采用 Kappa 统计量来确定两个性伴侣报告的伴侣类型之间的一致性水平。采用多变量逻辑回归来确定夫妻无保护性行为的可能性。
共确定了 782 个独特的异性关系。不到三分之一的关系是互惠提名的异性对体。共观察到 211 个互惠对体，由 198 名女性和 179 名男性报告。在互惠对体中，青少年与其性伴侣之间对伴侣类型的一致性较差，尽管主要-主要一致关系是最常见的群体（66.4%）。男性伴侣的年龄和关系持续时间显著增加了夫妻无保护性行为的可能性（调整后的 OR=1.4 和 1.2，p<0.05），男性伴侣的性频率显著降低了这种可能性（调整后的 OR=0.69，p<0.05）。当考虑其他协变量时，两个性伴侣对伴侣类型的一致性与夫妻无保护性行为没有显著关系。
这项独特的研究增进了对个体在报告关系中对其异性伴侣类型的感知的认识：大多数青少年伴侣没有得到互惠承认，而且两个性伴侣是否对伴侣类型达成一致并不能改变无保护性行为的可能性，即使在互惠对体中也是如此。
