Table 1 Demographic characteristics and risk behaviors (matched and unmatched samples) among PWID, Tehran, 2016
Variables | Pooled sample N = 500 (100%) | Matched sample N = 370 (100%) |
|---|---|---|
| Â | Number | Â |
Age | ||
 < 30  ≥ 30 | 275 (55) 225 (45) | 220 (59) 150 (41) |
Completed years of education | ||
 < 5 years  5–8  > 8 | 160 (32) 200 (40) 140 (28) | 110 (29) 150 (40) 110 (31) |
Marital status | ||
 Married  Single | 180 (36) 320 (64) | 100 (27) 270 (73) |
Age of first drug injecting (years) | ||
 < 25  ≥ 25 | 290 (58) 210 (42) | 240 (64) 130 (35) |
Income (Toomans) | ||
< 500,000  500,000–1,000,000  > 1,000,000 | 190 (38) 180 (36) 130 (26) | 120 (32) 130 (35) 120 (28) |
Housing status | ||
 Homeless  Stable home | 150 (30) 350 (70) | 100 (27) 270 (73) |
Receiving opioid maintenance treatments (OMT) | 380 (76) | 290 (78) |
MA use | 360 (72) | 260 (70) |
Condomless sex with any partner in past month | 300 (60) | 270 (73) |
Receptive syringe sharing in past month | 220 (44) | 160 (43) |
Distributive syringe sharing in past month | 120 (24) | 90 (24) |