Table 1.
Comparison Between the Clustered HIV-1 Sequences in the Transmission Network and the Rest of the HIV-1 Sequences Obtained in Guangzhou, Chinaa
| Characteristics | Sequences Clustered (n = 790) | Sequences Unclustered (n = 1996) | Odds Ratio (95% CI) | P Value |
|---|---|---|---|---|
| HIV-1 Genotype | ||||
| B | 28 (3.5%) | 146 (7.3%) | Reference | |
| CRF01_AE | 281 (35.6%) | 812 (40.7%) | 2.10 (1.36–3.23) | .001 |
| CRF07_BC | 324 (41.0%) | 831 (41.6%) | 2.44 (1.59–3.74) | <.001 |
| CRF55_01B | 157 (19.9%) | 207 (10.4%) | 3.71 (2.35–5.87) | <.001 |
| Risk Group | ||||
| HET | 85 (10.8%) | 416 (20.8%) | Reference | |
| IDU | 12 (1.5%) | 296 (14.8%) | 0.16 (0.09–0.30) | <.001 |
| MSM | 693 (87.7%) | 1284 (64.3%) | 1.95 (1.48–2.57) | <.001 |
| Gender | ||||
| Female | 14 (1.8%) | 180 (9.0%) | Reference | |
| Male | 776 (98.2%) | 1816 (91.0%) | 2.80 (1.53–5.11) | <.001 |
Abbreviations: CI, confidence interval; HET, heterosexual individuals; HIV, human immunodeficiency virus; IDU, intraveneous drug users; MSM, men who have sex with men.
aStatistical significances were calculated using multivariate logistic regression analysis.