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Table 1 Baseline characteristics of NHS participants
| Characteristic | All | Blip group | Control group | P value |
|---|---|---|---|---|
| Number, n | 772 | 99 | 673 | |
| Mean age at HIV diagnosis (years) | 29.1 (12.6) | 29.8 (12.4) | 29.1 (12.8) | 0.4881 |
| Mean time from HIV negative to seroconversion (years) | 0.6 (0.6) | 0.7 (0.6) | 0.6 (0.6) | 0.1704 |
| Mean time from seroconversion to first ART (years) | 1.7 (2.5) | 1.7 (2.8) | 1.7 (2.5) | 0.8564 |
| Male | 724 (93.8) | 94 (94.9) | 630 (93.6) | |
| Female | 48 (6.2) | 5 (5.1) | 43 (6.4) | |
| Race | 0.1599 | |||
| Caucasian | 305 (39.5) | 38 (38.4) | 267 (39.7) | |
| African-American | 327 (42.4) | 49 (49.5) | 278 (41.3) | |
| Other | 140 (18.1) | 12 (12.1) | 128 (19.0) | |
| Mean CD4 count at HIV diagnosis (cells/µL) | 437 (273) | 432 (308) | 439 (265) | 0.2258 |
| CD4 count at HIV diagnosis (cells/µL) | 0.4664 | |||
| <350 | 214 (30.7) | 33 (36.3) | 181 (29.9) | |
| 350 to <500 | 213 (30.6) | 25 (27.5) | 188 (31.1) | |
| ≥500 | 269 (38.6) | 33 (36.3) | 236 (39.0) | |
| Mean CD4 count at ART (cells/µL) | 340 (194) | 284 (190) | 353 (189) | 0.0002 |
| CD4 count at ART (cells/µL) | 0.0022 | |||
| <350 | 369 (52.1) | 64 (68.1) | 305 (49.7) | |
| 350 to <500 | 212 (29.9) | 22 (23.4) | 190 (30.9) | |
| ≥500 | 127 (17.9) | 8 (8.5) | 119 (19.4) | |
| Mean viral load at ART (log10copies/mL) | 4.5 (1.0) | 4.8 (0.9) | 4.5 (1.0) | 0.0017 |
