Table 1.
Characteristics of the study population overall and by active hepatitis C virus (HCV) infection status.
| Characteristic | No. of Participants (Weighted %) |
||
|---|---|---|---|
| Overall (n=11,663) | HCV RNA negative (n=6,617) | HCV RNA positive (n=5,046) | |
|
| |||
| Age group, y | |||
| 18–24 | 3255 (26.7%) | 1897 (26.2%) | 1358 (27.6%) |
| 25–29 | 2580 (21.5%) | 1383 (20.1%) | 1197 (24.1%) |
| 30–39 | 3739 (31.2%) | 2051 (31.4%) | 1688 (30.8%) |
| 40–49 | 1589 (15.0%) | 915 (15.6%) | 674 (13.7%) |
| ≥50 | 500 (5.7%) | 371 (6.6%) | 129 (3.8%) |
| Male | 11165 (94.1%) | 6238 (92.5%) | 4927 (97.5%) |
| Northeast region | 4989 (44.3%) | 2943 (50.9%) | 2046 (31.4%) |
| Educational attainment | |||
| Primary school or less | 3599 (36.5%) | 2143 (37.2%) | 1456 (35.3%) |
| Some secondary education | 5538 (44.2%) | 3061 (43.0%) | 2477 (46.4%) |
| High school graduate or more | 2525 (19.3%) | 1412 (19.8%) | 1113 (18.4%) |
| Experiencing homelessness | 987 (9.2%) | 574 (8.3%) | 413 (11.1%) |
| Incarceration in the past 6 mo. | 1075 (7.0%) | 515 (6.0%) | 560 (9.0%) |
| Alcohol use (AUDIT score) | |||
| None/mild/moderate (0–7) | 7502 (61.5%) | 4136 (57.8%) | 3366 (68.7%) |
| Harmful/hazardous (8–14) | 2006 (19.4%) | 1135 (20.4%) | 871 (17.3%) |
| Dependence (15–40) | 2155 (19.2%) | 1346 (21.8%) | 809 (14.0%) |
| Non-injection drug use in past 6 mo. | 7578 (64.0%) | 4152 (62.3%) | 3426 (67.3%) |
| IDU in the past 6 mo. | 9309 (73.1%) | 4766 (64.8%) | 4543 (89.1%) |
| Frequency of IDU in the past 6 mo. | |||
| None | 2354 (26.9%) | 1851 (35.2%) | 503 (10.9%) |
| Less than daily | 3207 (28.9%) | 2113 (31.4%) | 1094 (24.0%) |
| Daily | 6102 (44.2%) | 2653 (33.5%) | 3449 (65.2%) |
| Ever shared a needle/syringe | 6296 (47.4%) | 2814 (39.2%) | 3482 (63.6%) |
| HIV antibody positive | 2480 (20.3%) | 845 (12.3%) | 1635 (36.0%) |
| HCV antibody positive | 6455 (43.4%) | 1409 (14.4%) | 5046 (100%) |
| HCV RNA positive | 5046 (33.8%) | - | 5046 (100%) |
| Aware of HCV infection | - | - | 684 (11.0%) |
| Intervention arm | 5961 (48.1%) | 3310 (51.0%) | 2651 (42.4%) |
Note: Data are unweighted sample sizes (no.) and weighted column percentages (%) calculated using a composite weight including relative city size and RDS-II weights. There were 34 participants missing data on incarceration status; all other variables had <5 participants with missing data.