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Table 1 Chlamydia positivity and associations in men who have sex with women (MSW) attending MSHC 2002-2009

From: Trends in chlamydia and gonorrhea positivity among heterosexual men and men who have sex with men attending a large urban sexual health service in Australia, 2002-2009

Variable Number tested Number positive (%) Crude OR (95% CI) Adjusted ORb(95% CI)
All MSW 17769 1310 (7.37)   
Year of test a
    1.03 (1.01-1.06) 1.04 (1.01-1.07)
Age group
< 25 4310 433 (10.05) 1.00 1.00
25-34 7908 632 (7.99) 0.78 (0.68-0.88) 0.79 (0.68-0.91)
> 35 5549 245 (4.42) 0.41 (0.35-0.49) 0.39 (0.32-0.46)
No. female sexual partners 12 mo
0-1 4263 172 (4.03) 1.00 1.00
> 1 12698 1089 (8.58) 2.23 (1.89-2.63) 2.11 (1.75-2.5)
Condom use 12 mo
always 2583 88 (3.41) 1.00  
sometimes, usually, never 13883 1167 (8.41) 2.60 (2.09-3.24)  
No. female sexual partners 3 mo
0-1 9499 565 (5.95) 1.00  
> 1 7470 696 (9.32) 1.62 (1.45-1.82)  
Condom use 3 mo
always 3024 110 (3.64) 1.00 1.00
sometimes, usually, never 12277 1117 (9.10) 2.65 (2.17-3.24) 2.78 (2.23-3.46)
Contact with infection or symptomatic presentation
No 6546 258 (3.94) 1.00 1.00
Yes 8650 937 (10.83) 2.96 (2.57-3.41) 3.34 (2.89-3.88)
  1. a The odds ratio (OR) shows the association with chlamydia with each additional calendar year.
  2. b Adjusted for age, number of sexual partners last 12 months, condom use last 3 months and contact history or symptomatic presentation.
  3. OR = odds ratio, MSHC Melbourne Sexual Health Centre, mo = months