Table 1.
Demographic and clinical characteristics of the study population according to whether or not they belong to a molecular transmission cluster
| Non-clustered n=5,255 |
Clustered n=3,700 |
Overall N=8,955 |
||
|---|---|---|---|---|
| N (%) | N (%) | N (%) | P-value | |
| Sex | < 0.001 | |||
| Male | 3805 (72) | 3154 (85) | 6959 (78) | |
| Female | 1120 (21) | 331 (9) | 1451 (16) | |
| Unknown | 330 (6) | 215 (6) | 545 (6) | |
| Risk group | < 0.001 | |||
| MSM | 2423 (46) | 2557 (69) | 4980 (56) | |
| PWID | 692 (13) | 246 (7) | 938 (11) | |
| MSW | 1510 (29) | 577 (16) | 2087 (23) | |
| Haemophiliacs | 10 (<1) | 2 (<1) | 12 (<1) | |
| Other – unknown | 620 (12) | 318 (9) | 938 (11) | |
| Ethnicity | < 0.001 | |||
| White | 2434 (46) | 1419 (38) | 3853 (43) | |
| Black | 377 (7) | 72 (2) | 449 (5) | |
| Other | 377 (7) | 160 (4) | 537 (6) | |
| Unknown | 2067 (39) | 2049 (55) | 4116 (46) | |
| Country | < 0.001 | |||
| Canada | 558 (11) | 383 (10) | 941 (11) | |
| France | 18 (<1) | 5 (<1) | 23 (<1) | |
| Germany | 641 (12) | 901 (24) | 1542 (17) | |
| Greece | 28 (<1) | 7 (<1) | 35 (<1) | |
| Italy | 909 (17) | 188 (5) | 1097 (12) | |
| Netherlands | 51 (1) | 7 (<1) | 58 (<1) | |
| Norway | 399 (8) | 226 (6) | 625 (7) | |
| UK | 975 (19) | 584 (16) | 1559 (17) | |
| Austria | 687 (13) | 410 (11) | 1097 (12) | |
| Spain | 989 (19) | 989 (27) | 1978 (22) | |
| Subtype | < 0.001 | |||
| B | 4195 (80) | 3350 (91) | 7545 (84) | |
| C | 352 (7) | 81 (2) | 433 (5) | |
| A | 192 (4) | 68 (2) | 260 (3) | |
| CRF01_AE | 156 (3) | 36 (1) | 192 (2) | |
| CRF02_AG | 224 (4) | 89 (2) | 313 (4) | |
| D | 42 (<1) | 11 (0) | 53 (<1) | |
| G | 45 (<1) | 24 (0) | 69 (<1) | |
| F | 49 (<1) | 41 (1) | 90 (1) | |
| Sampling date | < 0.001 | |||
| 1987–2002 | 1484 (28) | 451 (12) | 1935 (22) | |
| 2003–2006 | 1254 (24) | 984 (27) | 2238 (25) | |
| 2007–2008 | 1135 (22) | 1062 (29) | 2197 (25) | |
| 2009–2011 | 1004 (19) | 956 (26) | 1960 (22) | |
| Not available | 378 (7) | 247 (7) | 625 (7) | |
| Seroconversion date | < 0.001 | |||
| 1981–1996 | 607 (12) | 160 (4) | 767 (9) | |
| 1997–2003 | 497 (10) | 373 (10) | 870 (10) | |
| 2004–2006 | 261 (5) | 410 (11) | 671 (8) | |
| 2007–2011 | 299 (6) | 443 (12) | 742 (8) | |
| Not known | 3591 (68) | 2314 (63) | 5905 (66) |
Abbreviations: MSM men who have sex with men, PWID people who inject drugs, MSW men who have sex with men and women