Table 1. Demographics and characteristics of the study population: women, MSW, and MSM.
| Female | MSW | MSM | Total | ||||||
| N = 2233 | N = 922 | N = 173 | N = 3328 | ||||||
| n | (%) | n | (%) | n | (%) | n | (%) | ||
| Year of participation | |||||||||
| 2009 | 1069 | (47.9) | 414 | (44.9) | 68 | (39.3) | 1551 | (46.6) | |
| 2011 | 1164 | (52.1) | 508 | (55.1) | 105 | (60.7) | 1777 | (53.4) | |
| Age | |||||||||
| 16–18 years | 249 | (11.2) | 61 | (6.6) | 17 | (9.8) | 327 | (9.8) | |
| 19–21 years | 974 | (43.6) | 351 | (38.1) | 71 | (41.0) | 1396 | (41.9) | |
| 22–24 years | 1010 | (45.2) | 510 | (55.3) | 85 | (49.1) | 1605 | (48.2) | |
| Ethnicity | |||||||||
| Dutch | 1925 | (86.2) | 741 | (80.4) | 137 | (79.2) | 2803 | (84.2) | |
| Non-Dutch | 308 | (13.8) | 181 | (19.6) | 36 | (20.8) | 525 | (15.8) | |
| Educational level * | |||||||||
| Low | 512 | (22.9) | 281 | (30.5) | 57 | (32.9) | 850 | (25.5) | |
| High | 1655 | (74.1) | 605 | (65.6) | 109 | (63.0) | 2369 | (71.2) | |
| Unknown | 66 | (3.0) | 36 | (3.9) | 7 | (4.0) | 109 | (3.3) | |
| Years sexual active | |||||||||
| 0–2 years | 411 | (18.4) | 97 | (10.5) | 32 | (18.5) | 540 | (16.2) | |
| 3–4 years | 576 | (25.8) | 224 | (24.3) | 47 | (27.2) | 847 | (25.5) | |
| ≥5 years | 1179 | (52.8) | 562 | (61.0) | 87 | (50.3) | 1828 | (54.9) | |
| Unknown | 67 | (3.0) | 39 | (4.2) | 7 | (4.0) | 113 | (3.4) | |
| Steady or casual sex partner | |||||||||
| No partner | 1009 | (45.2) | 348 | (37.7) | 71 | (41.0) | 1428 | (42.9) | |
| Steady partner | 878 | (39.3) | 409 | (44.4) | 61 | (35.3) | 1348 | (40.5) | |
| Casual partner | 237 | (10.6) | 99 | (10.7) | 21 | (12.1) | 357 | (10.7) | |
| Steady and casual partner | 52 | (2.3) | 28 | (3.0) | 14 | (8.1) | 94 | (2.8) | |
| Unknown | 57 | (2.6) | 38 | (4.1) | 6 | (3.5) | 101 | (3.0) | |
| Condom use steady partner, past 6 months | |||||||||
| Inconsistent condom use | 726 | (32.5) | 337 | (36.6) | 45 | (26.0) | 1108 | (33.3) | |
| Consistent condom use | 201 | (9.0) | 98 | (10.6) | 30 | (17.3) | 329 | (9.9) | |
| No steady partner | 1251 | (56.0) | 449 | (48.7) | 92 | (53.2) | 1792 | (53.8) | |
| Unknown | 55 | (2.5) | 38 | (4.1) | 6 | (3.5) | 99 | (3.0) | |
| Condom use casual partner, past 6 months | |||||||||
| Inconsistent condom use | 728 | (32.6) | 349 | (37.9) | 31 | (17.9) | 1108 | (33.3) | |
| Consistent condom use | 834 | (37.3) | 317 | (34.4) | 117 | (67.6) | 1268 | (38.1) | |
| No casual partner | 620 | (27.8) | 220 | (23.9) | 19 | (11.0) | 859 | (25.8) | |
| Unknown | 51 | (2.3) | 36 | (3.9) | 6 | (3.5) | 93 | (2.8) | |
| Number of sex partners, lifetime | |||||||||
| 1–4 partners | 762 | (34.1) | 187 | (20.3) | 29 | (16.8) | 978 | (29.4) | |
| 5–9 partners | 804 | (36.0) | 249 | (27.0) | 29 | (16.8) | 1082 | (32.5) | |
| ≥10 partners | 612 | (27.4) | 442 | (47.9) | 113 | (65.3) | 1167 | (35.1) | |
| Unknown | 55 | (2.5) | 44 | (4.8) | 2 | (1.2) | 101 | (3.0) | |
| Number of sex partners, past 6 months | |||||||||
| 0–1 partners | 806 | (36.1) | 232 | (25.2) | 28 | (16.2) | 1066 | (32.0) | |
| 2–3 partners | 1048 | (46.9) | 379 | (41.1) | 62 | (35.8) | 1489 | (44.7) | |
| ≥4 partners | 375 | (16.8) | 310 | (33.6) | 83 | (48.0) | 768 | (23.1) | |
| Unknown | 4 | (0.2) | 1 | (0.1) | 0 | (0.0) | 5 | (0.2) | |
| Passive anal intercourse, past 6 months | |||||||||
| No | 1938 | (86.8) | 917 | (99.5) | 44 | (25.4) | 2899 | (87.1) | |
| Yes | 253 | (11.3) | 5 | (0.5) | 129 | (74.6) | 387 | (11.6) | |
| Unknown | 42 | (1.9) | 0 | (0.0) | 0 | (0.0) | 42 | (1.3) | |
*
High educational level includes university of science and university of professional education, low educational level includes all other forms of education.
MSM = men who have sex with men; MSW = men who have sex with women only.