Table 1. Population characteristics and risk profile for people who inject drugs in matched and unmatched samples of PWID, Kermanshah, west of Iran 2014 .
| Variables |
Pooled sample,
n (%) (n=480) |
Matched sample,
n (%) (n=320) |
| Age (yr) | ||
| <30 | 216 (44.3) | 166 (52.4) |
| 30-39 | 144 (30.2) | 90 (28.2) |
| ≥40 | 120 (25.5) | 63 (20.4) |
| Education | ||
| Primary or below | 120 (24.2) | 64 (20.4) |
| High school | 192 (40.3) | 160 (50.3) |
| Diploma and high | 168 (35.5) | 96 (39.3) |
| Marital | ||
| Single | 336 (70.3) | 233 (73.5) |
| Married | 48 (10.2) | 26 (8.2) |
| Divorce | 72 (14.2) | 38 (11.2) |
| Widowed | 24 (5.3) | 23 (7.1) |
| Monthly income | ||
| less than 150 US$ | 400 (83.3) | 290 (90.4) |
| 150 US$ or more | 80 (16.7) | 40 (9.6) |
| Age of first injecting drug use | ||
| <25 | 270 (61.4) | 224 (70.1) |
| 25-30 | 100 (21.3) | 64 (20.2) |
| 30 and upper | 87 (17.3) | 32 (9.7) |
| Age of first drug use (yr) | ||
| <25 | 417 (87.8) | 280 (88.3) |
| 25-30 | 51 (9.1) | 30 (7.6) |
| ≥30 | 12 (3.1) | 10 (2.1) |
| Aware of HCV Status | 303 (63.2) | 193 (60.3) |
| Aware of HIV Status | 402 (83.7) | 281 (87.8) |
| Borrowing a syringe in past month | 135 (28.2) | 80 (25.1) |
| Lending a used syringe in past month | 77 (16.2) | 48 (15.3) |
| Borrowing or lending paraphernalia in past month | 283 (58.9) | 176 (55.3) |
| Reuse of own syringes in past month | 355 (73.9) | 227 (70.9) |
| Mean number of injecting partners (SD) | 2.43 (1.4) | 2.2 (1.3) |