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Table 3 Multivariate regression analyses for any STI and per STI in MSM aged 25 or older visiting STI clinics, the Netherlands, 2006-2012

From: Increasing sexually transmitted infection rates in young men having sex with men in the Netherlands, 2006–2012

  Any STI OR (95% CI) Chlamydia OR (95% CI) Gonorrhoea OR (95% CI) Infectious syphilis OR (95% CI) HIV OR (95% CI)
Year of consult 0.97 (0.95-0.98 NS NS 0.8 (0.8-0.9) 0.8 (0.8-0.9)
Age, years      
25-34 1.0 1.0 1.0 1.0 NS
35-44 0.9 (0.9-1.0) 0.9 (0.9-1.0) 0.9 (0.8-0.9) 1.3 (1.2-1.4)  
45-54 0.9 (0.8-0.9) 0.9 (0.8-0.9) 0.7 (0.6-0.7) 1.6 (1.4-1.8)  
>54 0.7 (0.6-0.7) 0.8 (0.7-0.8) 0.5 (0.4-0.5) 1.5 (1.2-1.7)  
Sexual behaviour     
Sex with both men and women 1.0 1.0 1.0 1.0 1.0
Sex with men only 1.5 (1.4-1.6) 1.3 (1.2-1.4) 1.7 (1.5-1.8) 1.5 (1.3-1.7) 2.0 (1.7-2.4)
Ethnicity      
Dutch 1.0 1.0 1.0 1.0 1.0
Surinam/Antilles 1.5 (1.3-1.6) 1.2 (1.1-1.4) 1.3 (1.1-1.5) 2.0 (1.6-2.5) 2.3 (1.9-2.9)
Turkey/Morocco 1.2 (1.1-1.4) 1.2 (1.0-1.5) 1.3 (1.1-1.5) 1.1 (0.7-1.7) 1.4 (1.0-2.0)
Eastern Europe 1.3 (1.1-1.4) 1.1 (0.9-1.3) 1.2 (1.0-1.4) 1.0 (0.7-1.6) 2.2 (1.7-2.9)
SS Africa 1.6 (1.3-2.0) 1.4 (1.0-1.9) 1.4 (1.0-1.9) 1.0 (0.5-1.9) 3.8 (2.5- 5.7)
Latin America 1.3 (1.1-1.4) 1.0 (0.9-1.2) 1.1 (1.0-1.3) 1.7 (1.3-2.2) 2.7 (2.1-3.4)
Asia 1.3 (1.2-1.4) 1.3 (1.1-1.4) 1.2 (1.0-1.4) 1.3 (1.0-1.7) 1.5 (1.2-1.9)
Other 1.0 (1.0-1.1) 0.9 (0.8-1.0) 1.0 (1.0-1.1) 1.0 (0.9-1.2) 1.4 (1.2-1.6)
Previous HIV test     
No 1.0 1.0 1.0 1.0 1.0
Yes, negative 0.8 (0.8-0.8) 0.8 (0.7-0.9) 0.9 (0.8-1.0) 0.7 (0.6-0.7) 0.6 (0.5-0.7)
Unknown 0.8 (0.7-0.9) 0.8 (0.6-0.9) 0.8 (0.6-0.9) 1.0 (0.8-1.4) 1.2 (0.9-1.5)
Previous STI      
No 1.0 1.0 1.0 1.0 1.0
Yes 1.7 (1.6-1.7) 1.5 (1.4-1.6) 1.6 (1.5-1.8) 1.5 (1.3-1.7) 2.0 (1.4-2.8)
Unknown 1.0 (0.9-1.1) 1.0 (0.9-1.1) 1.1 (1.0-1.3) 0.8 (0.7-1.0) 0.9 (0.5-1.4)
CSW      
No 1.0 NS 1.0 NT NS
Yes, in <6 months 0.8 (0.7-0.9)   0.8 (0.6-0.9)   
Unknown 0.4 (0.3-0.6)   0.3 (0.1-0.5)   
Client of CSW      
No 1.0 1.0 1.0 NS NS
Yes, in <6 months 0.6 (0.5-0.7) 0.7 (0.5-0.8) 0.6 (0.5-0.8)   
Unknown 1.4 (1.0-2.1) 0.7 (0.5-0.9) 1.7 (0.9-3.2)   
No of partners in < 6 months     
0-1 1.0 1.0 1.0 1.0 1.0
2-10 1.5 (1.4-1.6) 1.5 (1.3-1.6) 1.8 (1.6-2.0) 0.9 (0.7-1.0) 1.3 (1.1-1.5)
>10 1.9 (1.8-2.1) 1.7 (1.6-1.9) 2.4 (2.1-2.7) 0.9 (0.7-1.1) 1.7 (1.4-2.1)
Unknown 1.6 (1.5-1.7) 1.5 (1.4-1.7) 1.9 (1.7-2.2) 0.7 (0.6-0.9) 1.3 (1.1-1.6)
Notified      
No 1.0 1.0 1.0 1.0 1.0
Yes 2.2 (2.1-2.3) 1.9 (1.8-2.1) 2.3 (2.1-2.4) 1.9 (1.6-2.1) 2.2 (1.9-2.4)
Unknown 1.1 (1.0-1.2) 1.0 (1.0-1.1) 1.3 (1.1-1.4) 1.2 (1.0-1.4) 0.8 (0.7-1.0)
  1. NS: Not significant. NT: Not tested in multivariate model (p >0.20 in univariate model).
  2. In bold: significant (p < 0.01); due to rounding into 1 decimal 1.0 is not always significant.
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Emerging Themes in Epidemiology

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