Table 2.
Factors associated with genital chlamydia infection among men and women aged 18–25 years in Rogaland, Norway
| 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 |
Estimated in multiple logistic regression. N = 1535.'
*adjusted odds ratios are adjusted for the variables in the table as a result of stepwise procedure, backwards elimination.