Table 3.
Comparing sexual, HIV and HCV- related variables between groups randomized by recruitment chain, among Seattle-area participants in the 2012 NHBS-IDU survey: First randomization
| Group 1 (Chains 1,5,6) | Group 2 (Chains 2,3,4,7,8,9) | p-value | |||
|---|---|---|---|---|---|
| RDS- adjusted estimate | 95% C.I. | RDS- adjusted estimate | 95% C.I. | ||
| Male-to-male sexa | (Percentages) | ||||
| No | 91 | (87 – 96) | 86 | (75 – 95) | .03 |
| Yes | 9 | (4 – 13) | 14 | (6 – 25) | |
| Number sex partnersa | |||||
| 0 | 20 | (10 – 30) | 17 | (11 – 22) | .70 |
| 1 | 39 | (30 – 50) | 41 | (33 – 50) | |
| 2 – 4 | 28 | (20 – 35) | 30 | (23 – 37) | |
| 5 – 9 | 8 | (5 – 13) | 6 | (3 – 10) | |
| 10 + | 6 | (3 – 9) | 6 | (3 – 9) | |
| Unprotected, non-concordant sexa,b | |||||
| No | 73 | (65 – 81) | 77 | (71 – 83) | .25 |
| Yes | 27 | (20 – 35) | 23 | (17 – 29) | |
| HIV test, 12 months | |||||
| No | 49 | (38 – 60) | 62 | (55 – 71) | .001 |
| Yes | 51 | (41 – 62) | 38 | (29 – 45) | |
| HIV test, 3 months | |||||
| No | 83 | (75 – 88) | 84 | (78 – 90) | .68 |
| Yes | 17 | (12 – 25) | 16 | (10 – 22) | |
| Serologic HIV status | |||||
| Negative | 96 | (92 – 99.6) | 82 | (69 – 94) | 2 × 10−10 |
| Positive | 4 | (0.4 – 8) | 18 | (7 – 31) | |
| Serologic HCV status | |||||
| Negative | 29 | (20 – 38) | 32 | (23 – 40) | .47 |
| Positive | 71 | (62 – 80) | 69 | (60 – 77) | |
|
| |||||
| N (total)
|
295 | 393 | |||
a
Previous 12 months
b
Vaginal or anal sex without a condom with a partner of unknown HIV status or a status opposite to that of the participant.