Multivariate logistic regression | ||||
---|---|---|---|---|
Round 1 (n = 20926) | Round 2 (n = 17267) | |||
OR (95%CI) | p-value | OR (95%CI) | p-value | |
Gender | ||||
Male | 1.0 | 1.0 | ||
Female | 0.9(0.8-0.9) | < 0.001 | 0.9(0.8-0.9) | < 0.0001 |
Age | ||||
16-19 | 1.0 | ns | ns | |
20-24 | 0.9(0.9-1.0) | < 0.001 | ||
25-29 | 0.9(0.8-0.9) | < 0.001 | ||
Ethnicity | ||||
Dutch | 1.0 | 1.0 | ||
Surinam/Antillean | 1.3(1.2-1.4) | < 0.001 | 1.2(1.1-1.3) | < 0.001 |
Turkish/Moroccan | 1.4(1.3-1.5) | < 0.001 | 1.4(1.2-1.5) | < 0.001 |
Sub Sahara African | 1.4(1.1-1.3) | < 0.001 | 1.4(1.2-1.5) | < 0.001 |
Western, other | 1.2 (1.1-1.3) | < 0.001 | 1.1(1.0-1.2) | 0.02 |
Non-Western, other | 1.2(1.1-1.2) | < 0.001 | 1.2(1.1-1.3) | < 0.001 |
Region | ||||
Rotterdam | 1.0 | 1.0 | ||
Amsterdam | 1.3(1.2-1.3) | < 0.001 | 1.2(1.1-1.2) | < 0.001 |
South-Limburg | 1.3(1.1-1.4) | < 0.001 | 1.0 (0.9-1.1) | 0.61 |
Number of sexual partners < 6 months | ||||
No partner(s) | 1.0 | ns | ns | |
1steady partner | 1.8(1.4-2.3) | < 0.001 | ||
1 casual partner | 2.2(1.7-2.8) | < 0.001 | ||
≥ 2 partners (steady partner included) | 2.0(1.6-2.6) | < 0.001 | ||
Duration steady partnership | ||||
< 1 year | 1.0 | 1.0 | ||
1-2 years | 1.0(1.0-1.1) | 0.27 | 1.1(1.0-1.2) | 0.05 |
3-5 years | 1.0(0.9-1.1) | 0.87 | 1.3(1.1-1.4) | < 0.001 |
≥ 6 years | 1.2(1.1-1.3) | 0.009 | 1.3(1.2-1.5) | < 0.001 |
No steady partnership | 1.0(0.9-1.1) | 0.92 | 1.2(1.1-1.3) | 0.001 |
Condom use last contact CP | ||||
Yes | 1.0 | 1.0 | ||
No | 0.9(0.8-1.0) | 0.004 | 0.9(0.8-1.0) | 0.004 |
Sexual preference | ||||
Heterosexual mean | 1.0 | ns | ns | |
MSM | 0.8(0.6-0.9) | 0.003 | ||
Test result first screening round | ||||
Ct-neg | NA | NA | 1.0 | |
Ct-pos, no rescreening | 1.9(1.2-3.1) | 0.01 | ||
Ct-pos, rescreened Ct-neg | 1.1(0.9-1.4) | 0.19 | ||
Ct-pos, rescreened Ct-pos | 0.6(0.3-1.5) | 0.30 |