Stanley Ho Centre for Emerging Infectious Diseases, The Chinese University of Hong Kong, Hong Kong.
J Infect Public Health. 2009;2(4):177-83. doi: 10.1016/j.jiph.2009.09.002. Epub 2009 Nov 7.
A self-administered network-based questionnaire survey was conducted on 91 HIV-positive Chinese men having sex with men (MSM). Affiliation matrices were created to assess their networking pattern. The individuals' preferential use of venues for sex partnership before HIV infection has changed over three time periods of 1997-2000, 2001-2003 and 2004-2006. Over time, there was a parallel increase in network density (density scores from 0.26, through 0.36, to 0.53) and degree centrality (from a median score of 9, through 12, to 16), suggesting that connectivity of MSM was becoming higher through sexual networks. The overall practice of unprotected sex has, however, remained the same. The study demonstrated how the application of social network analysis could enrich the epidemiologic description of HIV infection in the population.
本研究对 91 名 HIV 阳性男男性接触者（MSM）进行了一项自我管理的基于网络的问卷调查。通过创建关联矩阵评估他们的网络模式。在 HIV 感染之前，个人对性伙伴关系场所的偏好使用在三个时期发生了变化：1997-2000 年、2001-2003 年和 2004-2006 年。随着时间的推移，网络密度（密度评分从 0.26，到 0.36，再到 0.53）和度数中心度（中位数评分从 9，到 12，再到 16）呈平行增加，这表明 MSM 通过性网络的连接性变得更高。然而，总的无保护性行为实践仍然相同。该研究展示了社会网络分析的应用如何丰富人群中 HIV 感染的流行病学描述。
