Table 4. Logistic regression model for recruitment into the RDS study.
| Variable | Category | Adjusted* OR | 95% Confidence interval |
| Age (years) | <20 | 1 | |
| 20–29 | 2.81 | 1.03–7.65 | |
| 30–39 | 5.37 | 1.97–14.49 | |
| 40–49 | 8.84 | 3.23–24.02 | |
| 50+ | 9.33 | 3.43–25.13 | |
| Socioeconomic status | Highest | 1 | |
| Higher | 1.77 | 1.34–2.34 | |
| Lower | 2.32 | 1.74–3.07 | |
| Lowest | 2.55 | 1.89–3.44 | |
| Unknown | 1.52 | 0.92–2.52 | |
| Tribe | Ganda | 1 | |
| Rwanda/kole | 1.12 | 0.87–1.44 | |
| Kiga | 1.65 | 0.80–3.41 | |
| Rundi | 1.43 | 0.91–2.24 | |
| Other known/unknown | 0.67 | 0.43–1.06 | |
| HIV status | Negative | 1 | |
| Positive | 1.14 | 0.78–1.66 | |
| Unknown | 0.28 | 0.21–0.37 | |
| Number of sex partners in the past year | 0 | 1 | |
| 1 | 1.75 | 1.27–2.40 | |
| 2–3 | 1.48 | 1.00–2.19 | |
| 4+ | 1.01 | 0.58–1.75 | |
| Unknown | 0.40 | 0.26–0.60 | |
| Distance to the nearest interview site (km) | 0–1 | 1 | |
| 1–2 | 0.50 | 0.37–0.66 | |
| 2–3 | 0.50 | 0.37–0.67 | |
| 3+ | 0.42 | 0.28–0.64 | |
| Participated in the last cohort round | No | 1 | |
| Yes | 1.22 | 0.93–1.59 | |
| Transformed network size ** | 0.46 | 0.22–1.01 |
N = 2396 due to missing data for the variable distance to the nearest interview site. * = Adjusted for other variables in model. ** Transformed network size = 
.