Table 1.
Characteristics of 577 men who have sex with men, stratified by self-perceived HIV status, Amsterdam, 2008-9
| Total | HIV-negative | HIV-positive | HIV unaware | P c | |
|---|---|---|---|---|---|
| N(%)a | n(%)a | n(%)a | n(%)a | ||
| N | 577 | 351 (60.8 %) | 153 (26.5 %) | 73 (12.7 %) | |
| Demographics | |||||
| Median age in years (IQR) | 37 (30–43) | 36 (30–43) | 40 (36–46) | 32 (28–41) | <0.001 |
| Age in years, categorised | <0.001 | ||||
| < 30 | 124 (21.5 %) | 86 (24.5 %) | 13 (8.5 %) | 25 (34.3 %) | |
| 30–34 | 104 (18.0 %) | 68 (19.4 %) | 20 (13.1 %) | 16 (21.9 %) | |
| 35–39 | 120 (20.8 %) | 71 (20.2 %) | 41 (26.8 %) | 8 (11.0 %) | |
| ≥ 40 | 229 (39.7 %) | 126 (35.9 %) | 79 (51.6 %) | 24 (32.9 %) | |
| Ethnic groupb | 0.181 | ||||
| Dutch | 412 (73.8 %) | 259 (75.5 %) | 104 (70.8 %) | 49 (72.1 %) | |
| Western, non-Dutch | 72 (12.9 %) | 44 (12.8 %) | 23 (15.7 %) | 5 (7.4 %) | |
| Non-western | 74 (13.3 %) | 40 (11.7 %) | 20 (13.6 %) | 14 (20.6 %) | |
| Sexual behaviour | |||||
| Median no. of male sex partners in preceding 6 months (IQR) | 10 (5–20) | 8 (5–15) | 12 (6–30) | 10 (5–20) | <0.001 |
| No. of male sex partners in preceding 6 months | |||||
| 1–4 | 119 (20.6 %) | 83 (23.7 %) | 22 (14.4 %) | 14 (19.2 %) | <0.001 |
| 5–9 | 166 (28.8 %) | 113 (32.2 %) | 31 (20.3 %) | 22 (30.1 %) | |
| 10–24 | 188 (32.6 %) | 112 (31.9 %) | 53 (34.6 %) | 23 (31.5 %) | |
| 25–49 | 64 (11.1 %) | 31 (8.8 %) | 26 (17.0 %) | 7 (9.6 %) | |
| ≥ 50 | 40 (6.9 %) | 12 (3.4 %) | 21 (13.7 %) | 7 (9.6 %) |
Abbreviations: IQR interquartile range
aUnless specified otherwise
bEthnicity was missing for 8 HIV-negative participants, for 6 HIV-positive participants and for 5 HIV unaware participants
cP was calculated using χ 2-test for dichotomous and categorical variables and rank sum test for continuous variables