Table 2 Associations between variables and Chlamydia trachomatis infection in women, heterosexual men and MSM
Variables | Crude prevalence of Chlamydia infection % | (n/N) | Unadjusted PR | (95 % CI) | P value | Adjusted PR | (95 % CI) |
|---|---|---|---|---|---|---|---|
Women (N = 1144) | Number of participants in the final model: N = 839 | ||||||
Age group (years) | |||||||
≥ 40 (ref.) | 2.5 | (5/202) | Ref. | Ref. | |||
18–24 | 9.0 | (25/279) | 3.6 | (1.4–9.3) | 0.007 | 3.0 | (1.2–7.8) |
25–29 | 6.8 | (22/345) | 2.6 | (1.0–6.7) | 0.052 | 1.9 | (0.7–4.8) |
30–39 | 2.8 | (9/318) | 1.1 | (0.4–3.4) | 0.808 | 1.0 | (0.3–2.9) |
No. of partners | |||||||
1 (ref.) | 4.4 | (19/428) | Ref. | Ref. | |||
0 | 0 | (0/53) | - | - | |||
2 | 6.7 | (16/238) | 1.5 | (0.8–2.9) | 0.208 | 1.4 | (0.8–2.7) |
≥ 3 | 9.3 | (17/183) | 2.1 | (1.1–3.9) | 0.022 | 2.1 | (1.1–4.0) |
Country of birth (ref. = Germany) | 5.0 | (47/938) | Ref. | ||||
Abroad | 7.5 | (14/186) | 1.5 | (0.8–2.7) | 0.166 | 1.9 | (1.0–3.5) |
Vaginal discharge (ref. = no) | 4.9 | (52/1073) | Ref. | ||||
Yes | 12.7 | (9/71) | 2.6 | (1.3–5.1) | 0.005 | - | - |
Reason for getting tested | |||||||
(ref. = not a reason for getting tested) | 4.2 | (17/404) | Ref. | ||||
Intercourse with a person of unknown HIV status | 6.2 | (43/697) | 1.5 | (0.9–.2.6) | 0.126 | - | - |
(ref. = not a reason for getting tested) | 5.3 | (57/1076) | Ref. | ||||
Occupational exposure | 12 | (3/25) | 2.3 | (0.8–6.9) | 0.131 | - | - |
Heterosexual men (N = 1134) | Number of participants in the final model: N = 854 | ||||||
Age group (years) | |||||||
≥ 40 (ref.) | 1.8 | (5/274) | Ref. | Ref. | |||
18–24 | 5.7 | (12/210) | 3.1 | (1.1–8.8) | 0.029 | 4.1 | (1.3–13) |
25–29 | 4.2 | (12/288) | 2.3 | (0.8–6.4) | 0.116 | 2.0 | (0.6–6.7) |
30–39 | 1.9 | (7/362) | 1.1 | (0.3–3.3) | 0.920 | 1.2 | (0.3–4.2) |
No. of partners | |||||||
1 (ref.) | 3.4 | (10/297) | Ref. | Ref. | |||
0 | 0.0 | (0/20) | - | - | |||
2 | 3.5 | (9/255) | 1.0 | (0.4–2.5) | 0.917 | 1.1 | (0.4–2.7) |
≥ 3 | 3.4 | (11/321) | 1.0 | (0.4–2.4) | 0.967 | 0.9 | (0.4–2.2) |
Reason for getting tested | |||||||
(ref. = not a reason for getting tested) | 2.3 | (10/437) | Ref. | Ref. | |||
Intercourse with a person of unknown HIV status | 3.6 | (24/668) | 1.6 | (0.8–3.3) | 0.224 | 1.7 | (0.7–3.9) |
MSM (N = 549) | Number of participants in the final model: N = 358 | ||||||
Age group (years) | |||||||
≥ 40 (ref.) | 2.7 | (4/150) | Ref. | Ref. | |||
18–24 | 3.7 | (4/108) | 1.4 | (0.4–5.4) | 0.637 | 1.7 | (0.4–6.6) |
25–29 | 2.8 | (3/109) | 1.0 | (0.2–4.5) | 0.967 | 0.4 | (0.04–3.4) |
30–39 | 4.4 | (8/182) | 1.6 | (0.5–5.3) | 0.412 | 1.3 | (0.4–4.3) |
No. of partners | |||||||
1 (ref.) | 2.0 | (2/101) | Ref. | Ref. | |||
0 | 0.0 | (0/4) | - | - | |||
2 | 0.0 | (0/69) | - | - | |||
≥ 3 | 5.1 | (15/431) | 2.6 | (0.6–11) | 0.211 | 2.8 | (0.6–12) |
Penile discharge (ref. = no) | 3.3 | (18/546) | Ref. | ||||
Yes | 33.3 | (1/3) | 10.1 | (1.9–53) | 0.006 | - | - |
Painful urination (ref. = no) | 3.2 | (17/534) | Ref. | ||||
Yes | 13.3 | (2/15) | 4.2 | (1.1–17) | 0.041 | - | - |