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目的分析芜湖市2011-2015年暗娼人群梅毒感染率变化趋势及影响因素,为制定控制措施提供依据。方法采用SPSS 19.0软件对2011-2015年芜湖市暗娼人群哨点监测中梅毒感染数据进行趋势χ2检验,并使用单因素和多因素Logistic回归模型分析梅毒感染率的影响因素。结果 2 026名暗娼中,高、中、低档者分别占11.06%、70.68%和18.26%,平均年龄(29.16±7.19)岁,在婚者占57.35%,初中文化程度占56.86%。2011-2015年低档暗娼梅毒感染率分别为19.59%、8.00%、21.33%、3.51%和4.55%,呈下降趋势(χ2趋势=8.11,P=0.004)。而最近一次与客人安全套使用率、最近一个月与客人安全套坚持使用率均呈增长趋势(P<0.05),前者分别为79.38%、89.33%、97.33%、96.49%、100%,后者分别为41.24%、72.00%、44.00%、80.70%、83.33%。多因素非条件Logistic回归分析结果显示,暗娼梅毒的感染率平均每年减少22%[调整比值比(AOR)=0.78,95%可信区间(CI):0.67~0.91],35岁及以上者感染梅毒的危险为25岁以下者的2.09倍(95%CI:1.15~3.79);低档暗娼感染梅毒的危险为高档者的2.68倍(95%CI:1.07~6.66),最近一个月与客人未坚持使用安全套的暗娼感染梅毒的危险为坚持使用者的1.97倍(95%CI:1.30~2.99)。结论 2011-2015年芜湖市低档暗娼梅毒感染率呈下降趋势,而安全套使用呈上升趋势;低档暗娼和35岁以上暗娼感染梅毒的风险更大,应加强对低档暗娼的监测和干预。
Objective To analyze the trend and influencing factors of syphilis infection among female sex workers in Wuhu city from 2011 to 2015, and provide the basis for the establishment of control measures. Methods The SPSS 19.0 software was used to test the trends of the syphilis infection data in the sentinel surveillance of the female sex workers in Wuhu from 2011 to 2015. The single factor and multivariate Logistic regression models were used to analyze the influencing factors of syphilis infection rate. Results Among 2 026 sex workers, 11.06%, 70.68% and 18.26% were middle, high, middle and low grade, respectively. The average age was 29.16 ± 7.19 years, 57.35% were married and 56.86% were middle school students. The prevalence of syphilis among low-grade female sex workers in 2011-2015 were 19.59%, 8.00%, 21.33%, 3.51% and 4.55%, respectively, showing a decreasing trend (χ2 trend = 8.11, P = 0.004). However, the rate of condom use in the last month and that of the condom in the last month and the rate of condom use continued to increase (79.38%, 89.33%, 97.33%, 96.49% and 100% respectively), and the latter were 41.24%, 72.00%, 44.00%, 80.70%, 83.33%. Multivariate non-conditional Logistic regression analysis showed that syphilis infection among sex workers decreased by 22% on average [AOR = 0.78, 95% confidence interval (CI): 0.67 to 0.91], and age 35 and older The risk of syphilis was 2.09 times (95% CI: 1.15-3.79) for those under the age of 25. The risk of contracting syphilis among low-grade female sex workers was 2.68 times (95% CI: 1.07-6.66) The risk of contracting syphilis among sex workers using condoms was 1.97 times higher than those who adhered to the guidelines (95% CI: 1.30-2.99). Conclusion The prevalence of syphilis infection among low-grade female sex workers in Wuhu City decreased from 2011 to 2015, but the condom use was on the rise. The risk of syphilis infections among low-grade female sex workers and sex workers over the age of 35 was greater. Surveillance and intervention on low-sex female sex workers should be strengthened.