Table 1.
Characteristics of the study population
| Gender, n (%) | |
| male | 619 (94.5) |
| female | 36 (5.5) |
| Risk exposure, n (%) | |
| MSM | 543 (82.9) |
| heterosexual male | 48 (7.3) |
| heterosexual female | 33 (5.0) |
| IVDU | 3 (0.5) |
| other/unknown | 28 (4.3) |
| Ethnicity, n (%) | |
| white | 510 (77.9) |
| black (African/Caribbean/other) | 41 (6.3) |
| other/unknown | 104 (15.9) |
| Region, n (%) | |
| London | 374 (57.1) |
| North of England | 113 (17.3) |
| Midlands & East of England | 83 (12.7) |
| South of England | 78 (11.9) |
| Northern Ireland | 6 (0.9) |
| Wales | 1 (0.2) |
| Subtype, n (%) | |
| A | 24 (3.7) |
| B | 442 (67.5) |
| C | 38 (5.8) |
| D | 3 (0.5) |
| F | 27 (4.1) |
| G | 4 (0.6) |
| CRF01_AE | 28 (4.3) |
| CFR02_AG | 54 (8.2) |
| CRF06_cpx | 18 (2.7) |
| CRF07_BC | 1 (0.2) |
| CRF11_cpx | 3 (0.5) |
| CRF12_BF | 3 (0.5) |
| CRF24_BG | 1 (0.2) |
| complex recombinants | 9 (1.4) |
| Age (years), median (IQR) | 33 (26.5–41) |
| CD4+ cell count (cells/mm3), median (IQR) | 545 (408–723)a |
| Viral load (log10 copies/mL), median (IQR) | 5.18 (4.61–6.03)b |
a
n = 602, number of samples with CD4+ cell counts done within 30 days of date of collection of the sample used for RITA and sequencing.
b
n = 366, number of samples with viral load done within 30 days of date of collection of the sample used for RITA and sequencing.