Table 1. Characteristics of HIV infected individuals.
| Characteristics | Categories | MSM (%) | Heterosexuals (%) | IDU (%) | p-value |
| HIV patients | 2084 | 1501 | 355 | ||
| Origin | Western Europe | 1457 (69.9) | 589 (39.2) | 179 (50.4) | <0.001 |
| Eastern Europe & Central Asia | 378 (18.1) | 253 (16.9) | 145 (40.8) | ||
| Sub-Saharan Africa | 10 (0.5) | 451 (30.0) | 4 (1.1) | ||
| Other | 239 (11.5) | 208 (13.9) | 27 (7.6) | ||
| Baseline values | Plasma HIV-RNA, median (IQR), log copies/ml | 4.88 (4.3–5.4) | 4.79 (4.2–5.3) | 4.76 (4.2–5.3) | <0.001 |
| CD4 cell count, median (IQR), cells/mm3 | 435 (259–585) | 280 (110–458) | 392 (197–521) | <0.001 | |
| Age, mean years (IQR) | 36.1 (29–41) | 37.7 (29–45) | 33.2 (26–39) | <0.001 | |
| Gender | Male | 2070 (99.3) | 765 (51.0) | 269 (75.8) | <0.001 |
| CDC stage | A and B | 1860 (89.3) | 1148 (76.5) | 277 (78.0) | <0.001 |
| C | 167 (8.0) | 250 (16.7) | 37 (10.4) | ||
| Subtype | B | 1884 (90.4) | 503 (33.5) | 218 (61.4) | <0.001 |
| A | 86 (4.1) | 275 (18.3) | 79 (22.2) | ||
| C | 15 (0.7) | 259 (17.3) | 6 (1.7) | ||
| 02_AG | 22 (1.1) | 158 (10.5) | 5 (1.4) | ||
| G | 11 (0.5) | 96 (6.4) | 24 (6.8) | ||
| F | 10 (0.5) | 54 (3.6) | 2 (0.6) | ||
| others | 30 (1.4) | 115 (7.7) | 16 (4.5) | ||
| unassigned | 26 (1.2) | 41 (2.7) | 5 (1.4) | ||
| non-B | 174 (8.3) | 957 (63.8) | 132 (37.2) | ||
| Duration of infection | <1 year | 897 (43.0) | 203 (13.5) | 83 (23.4) | <0.001 |
| 1–2 years | 108 (5.2) | 23 (1.5) | 12 (3.4) | ||
| Unknown duration | 1079 (51.8) | 1275 (84.9) | 260 (73.2) |
NOTE. Data are no. (%) of individuals, unless otherwise indicated. Characteristics describe individuals from whom a baseline HIV-1 genotypic analysis was available. CDC, Centers for Disease Control and Prevention; IQR, interquartile ranges; MSM, men who have sex with men; IDU, injection drug users.