摘要
目的探索用同伴推动抽样法（respondent—drivensampling，RDS）结合乘数法进行男男性接触者（menwhohavesexwithmen，MSM）基数估计的可行性，为当地疫情估计及制定针对MSM的艾滋病防治策略提供科学依据。方法2006年采用RDS招募在宁夏某城市连续居住3个月以上的MSM，并进行面对面的问卷调查，获得其特定时间点击目标网站人数的比例（1／m），通过RDS分析软件进行权重处理；结合目标网站特定时间的点击数和网络调查获得网络基数（r）；采用乘数法（N=r×m）估计当地MSM的规模。结果2006年6～8月共招募90名MSM参加调查。被调查的MsM访问目标网站比例为49．O％（90％CI：35．9％～66．0％），访问目标网站的目标人群基数为1653人，估计该城市MSM为3372（90％CI：2513～4612）人，占该市15～49岁男性人口的1．20％（90％CI：0．9％～1．64％）。结论RDS结合乘数法对MSM进行基数估计是可行的，应进一步研究如何提高MSM的应答率。
Objective To estimate the population size of men who have sex with men （MSM） in a western city of China to provide scientific data for planning of targeted prevention among MSM in the city. Methods In 2006, Respondent - driven sampling （RDS） was applied to recruit MSM in the targeted city. A structured questionnaire guided face to face interview was applied to obtain the proportion of MSM （1/m） who had visited the websites during the given period. The number of MSM（r） who visited website during a given period was investigated by a web - based questionnaire. Therefore, population size can be estimated by r muhiplied by m. Results A total of 90 MSM were recruited within 3 months. The estimated number of MSM in the western city of China were 3 372（90% CI：2 513 -4 612）, which accounted for 1.20% （90% CI：0. 9% - 1.64% ） of the adult males aged 15 - 49 years. Conclusion RDS with multiplier is an effective way to estimate the number of MSM.
出处
《华南预防医学》
2009年第6期20-22,共3页
South China Journal of Preventive Medicine
基金
美国GAP项目
宁夏自然科学基金项目(NX08154)
关键词
同伴推动抽样法
乘数法
男男性接触者
人口密度
Respondent-driven sampling
Multiplier
Men who have sex with men （ MSM ）
Population density
