Skip to main content

Table 1 Prevalence and odds of C. trachomatis and N. gonorrhoeae infections by socio-demographic and behavioral characteristics and other STIs

From: The prevalences of Neisseria gonorrhoeae and Chlamydia trachomatis infections among female sex workers in China

Factor Sample size Gonorrhoea Chlamydia
% OR (95% CI)   % OR (95% CI)  
FSW category        
 High-tier 1192 5.54 Reference 16.36 Reference
 Middle-tier 1298 5.24 0.94 (0.67–1.34) 0.74 16.87 1.04 (0.84–1.28) 0.73
 Low-tier 609 8.04 1.49 (1.02–2.19) 0.04 20.03 1.28 (1.00–1.65) 0.05
Age group (years)        
 15–20 617 8.10 Reference 27.88 Reference
 21–25 1149 5.05 0.60 (0.41–0.89) 0.01 18.53 0.59 (0.47–0.74) <0.001
 26–30 648 4.94 0.59 (0.37–0.93) 0.02 10.03 0.29 (0.21–0.39) <0.001
 >30 685 6.28 0.76 (0.50–1.16) 0.20 12.55 0.37 (0.28–0.49) <0.001
Geographic area        
 Other provinces 2301 5.43 Reference 16.30 Reference
 Guangxi 798 7.27 1.36 (0.99–1.88) 0.06 20.18 1.30 (1.06–1.59) 0.01
Education level        
 Primary school or below 460 7.17 Reference 14.56 Reference
 Secondary school 2074 5.59 0.77 (0.51–1.14) 0.19 17.84 1.27 (0.96–1.69) 0.09
 High school or above 562 6.05 0.83 (0.51–1.37) 0.47 17.61 1.25 (0.89–1.76) 0.19
Marital status        
 Never married 1890 5.38 Reference 19.79 Reference
 Married 1113 6.65 1.25 (0.92–1.70) 0.15 13.57 0.64 (0.52–0.78) <0.001
 Divorced 87 5.75 1.07 (0.42–2.70) 0.88 11.49 0.53 (0.27–1.03) 0.06
Consistent condom use in past month        
 Yes 1611 6.33 Reference 16.57 Reference
 No 1488 5.44 0.85 (0.63–1.15) 0.29 17.08 1.11 (0.92–1.34) 0.27
Other STIs        
 Syphilis 200 9.00 1.64 (0.99–2.73) 0.06 14.00 0.77 (0.51–1.15) 0.20
 Gonorrhoea 183 28.41 1.99 (1.43–2.79) <0.001
 Chlamydia 536 9.70 1.99 (1.43–2.79) <0.001
  1. OR: odds ratio; CI: confidence interval.