Table 1. Summary statistics describing the study cohort, comparing HIV seroconverters to negative HIV testers, 2004 to 2017.
| Variable | Seroconverters N = 257* | Negative testers N = 8781* | P-value** |
|---|---|---|---|
| Person-years | 650.8 | 29591.0 | |
| Median age (25th -75th percentile) | 34 (27–41) | 32 (27–42) | 0.636 |
| Age, % (n) | 0.229 | ||
| 15–19 years | 2.0% | 1.2% | |
| 20–24 years | 11.3% | 13.0% | |
| 25–29 years | 19.8% | 23.4% | |
| 30–39 years | 36.2% | 32.2% | |
| 40–59 years | 28.4% | 26.1% | |
| 60+ years | 2.3% | 4.2% | |
| Median HIV tests (25th -75th percentile) | 4 (2–7) | 3 (2–6) | 0.137 |
| % having syphilis diagnosis (n) | 20.6% | 6.7% | <0.001 |
| % having rectal chlamydia diagnosis (n) | 24.5% | 10.8% | <0.001 |
| % having rectal gonorrhea diagnosis (n) | 23.4% | 8.2% | <0.001 |
| % reporting not using condoms, last 6 months (n*) | 10.9% (N = 165) | 16.3% (N = 5304) | 0.051 |
| % reporting 15 or more partners, last 6 months (n*) | 6.7% (N = 119) | 4.9% (N = 4356) | 0.393 |
| % reporting HIV positive partner, last 6 months (n*) | 31.6% (N = 57) | 10.9% (N = 2007) | <0.001 |
*note: sample sizes for self-reported risk factors are less than the total N due to non-responses; actual number noted in appropriate row
** P-values are from likelihood ratio chi-square tests (proportions) or Wilcoxon tests (medians).