运用捕获-再捕获方法估计天津市跨性别女性人群规模题录

目的了解天津市跨性别女性(TGW)人群规模, 分析该人群性行为特征, 为制定防控措施提供依据。方法采用捕获-再捕获方法, 估计天津市TGW人群规模, 同时收集匿名调查问卷, 对TGW人群的性行为进行多因素logistic分析。采用问卷星建立调查问卷数据库, 采用SPSS 24.0软件进行统计学分析。结果共调查TGW人群213人, 估计天津市TGW人群规模为599(95%CI:407～792)人。TGW人群坚持使用安全套的多因素logistic回归分析结果显示, 最近3个月有固定性伴的人坚持使用安全套的比例较低(与最近3个月无固定性伴者相比, aOR=0.44, 95%CI:0.23～0.82), 最近1年做过HIV抗体检测者坚持使用安全套的比例较高(与最近1年与未做过HIV抗体检测者相比, aOR=2.73, 95%CI:1.06～6.99)。结论需要加强TGW人群及其固定性伴的HIV动员检测, 提高安全套的使用率。

Estimate the population size of transgender women based on the capture-recapture method in Tianjin

Objective To investigate the population size of transgender women (TGW) in Tianjin and analyze the characteristics of their sexual behaviors to provide a basis for AIDS prevention and control. Methods To estimate the population size of TGW in Tianjin using the capture-recapture method. At the same time, an anonymous questionnaire was collected to conduct a multi-factor logistic analysis of the TGW population''s sexual behavior. Results A total of 213 TGW were investigated. Tianjin''s estimated TGW population size was 599 (95%CI: 407-792). Multivariate logistic analysis of the use of condoms consistently showed that compared with TGW without regular sex partners, those with regular sex partners had a lower proportion of consistent condom use (aOR=0.44, 95%CI: 0.23-0.82) and had received HIV tests in the last year were more likely to adhere to condom use than those who had not been tested (aOR=2.73, 95%CI: 1.06-6.99).Conclusion It is necessary to strengthen HIV mobilization testing among the TGW population and their regular sexual partners to improve condom use.