Chow Eric P F, Read Tim R H, Law Matthew G, Chen Marcus Y, Bradshaw Catriona S, Fairley Christopher K
Melbourne Sexual Health Centre, Alfred Health, 580 Swanston Street, Carlton, Vic. 3053, Australia.
The Kirby Institute, UNSW Australia, Wallace Wurth Building, Sydney, NSW 2052, Australia.
Sex Health. 2016 Oct;13(5):451-456. doi: 10.1071/SH16055.
Assortative mixing patterns have become a new and important focus in HIV/sexually transmissible infection (STI) research in recent years. There are very limited data on sexual mixing patterns, particularly in an Australian population.
Male-female and male-male partnerships attending the Melbourne Sexual Health Centre (MSHC) between 2011 and 2014 were included. Correlation of age between two individuals within a partnership was examined by using Spearman's rank correlation. The Newman's assortativity coefficient was used as an aggregate quantitative measurement of sexual mixing for number of partners and condom use.
1165 male-female and 610 male-male partnerships were included in the analysis. There was a strong positive correlation of age in both male-female (rho=0.709; P<0.001) and male-male partnerships (rho=0.553; P<0.001). The assortative mixing pattern for number of partners was similar in male-female (r=0.255; 95% CI: 0.221-0.289) and male-male partnerships (r=0.264; 95% CI: 0.218-0.309). There was a stronger assortative mixing pattern for condom use in male-male (r=0.517, 95% CI: 0.465-0.569) compared with male-female (r=0.382; 95% CI: 0.353-0.412) partnerships.
Male-female and male-male partnerships have a high assortativity mixing pattern for age, number of partners and condom use. The sexual mixing pattern is not purely assortative, and hence it may lead to increased HIV and STI transmission in certain risk groups.
近年来，配对混合模式已成为艾滋病毒/性传播感染（STI）研究中新的重要关注点。关于性混合模式的数据非常有限，尤其是在澳大利亚人群中。
纳入2011年至2014年间前往墨尔本性健康中心（MSHC）的男女和男男伴侣。通过使用斯皮尔曼等级相关来检查伴侣关系中两人之间的年龄相关性。纽曼分类系数用作伴侣数量和避孕套使用的性混合的总体定量测量。
分析纳入了1165对男女伴侣和610对男男伴侣。男女伴侣（rho = 0.709；P < 0.001）和男男伴侣（rho = 0.553；P < 0.001）中年龄均呈强正相关。男女伴侣（r = 0.255；95% CI：0.221 - 0.289）和男男伴侣（r = 0.264；95% CI：0.218 - 0.309）中伴侣数量的配对混合模式相似。与男女伴侣（r = 0.382；95% CI：0.353 - 0.412）相比，男男伴侣（r = 0.517，95% CI：0.465 - 0.569）中避孕套使用的配对混合模式更强。
男女和男男伴侣在年龄、伴侣数量和避孕套使用方面具有高度的配对混合模式。性混合模式并非纯粹的配对模式，因此可能导致某些风险群体中艾滋病毒和性传播感染的传播增加。
