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Table 2 Factors associated with genital chlamydia infection among men and women aged 18–25 years in Rogaland, Norway

From: Population based study of genital Chlamydia trachomatis prevalence and associated factors in Norway: A cross sectional study

Sample characteristic n/N Crude OR 95%CI *Adjusted OR 95% CI p-value
Men       
Presence of a local youth clinic       <0.001
Yes 20/307 1 Reference 1 Reference  
No 5/15 7.2 2.2-23.0 8.6 2.2-33.5  
Do not know 6/283 0.3 0.1-0.8 0.3 0.1-0.7
Using youth clinic’s services       0.066
Yes 2/66 1 Reference 1 Reference  
No 29/539 1.8 0.4-7.8 4.1 0.9-19.1  
Number of partners during last year       <0.001
0 1/24 6.5 0.6-74.9 6.2 0.5-78.2  
1 2/303 1 Reference 1 Reference  
2-3 11/154 11.6 2.5-52.9 11.2 2.4-52.5  
4-5 9/66 23.8 5.0-112.9 28.6 5.8-142.0  
More than 5 8/58 24.1 5.0-116.7 30.5 6.0-155.5  
Women       
Previously diagnosed with Chlamydia       
Yes 19/152 1 Reference 1 Reference <0.001
No 35/778 0.3 0.2-0.6 0.3 0.2-0.6  
Previously diagnosed with genital warts       
Yes 1/64 1 Reference 1 Reference 0.071
No 53/866 4.1 0.6-20.2 6.5 0.8-49.1  
Consulting family doctor on STI       
Yes 18/352 1 Reference 1 Reference 0.027
No 36/578 1.2 0.7-2.2 2.1 1.1-4.2  
Number of partners during last year       
0 0/15 - - - - <0.001
1 15/563 1 Reference 1 Reference  
2-3 19/222 3.4 1.7-6.9 3.2 1.6-6.5  
4-5 12/83 6.2 2.8-13.7 6.5 2.8-14.7  
More than 5 8/48 7.3 2.9-18.3 7.9 3.0-20.6  
  1. Estimated in multiple logistic regression. N = 1535.'
  2. *adjusted odds ratios are adjusted for the variables in the table as a result of stepwise procedure, backwards elimination.