Table 1 Baseline characteristics of participants (* p < 0.05, **p < 0.001)
| Â | Research | Control | Total | p |
|---|---|---|---|---|
(n = 120) | (n = 120) | (n = 240) |  | |
Age, M(SD), years | 43.15(8.21) | 41.83(8.93) | 42.46 (8.6) | 0.260 |
Male, n (%) | 98 (81.67) | 94(78.33) | 192(80.0) | 0.630 |
Marital status, n (%) | ||||
 Single | 63(52.5) | 62(51.7) | 125(52.08) | 0.788 |
 Married | 57(47.5) | 58(48.3) | 115(47.92) | |
Education, M(SD), years | 9.84(1.87) | 9.94(2.28) | 9.89(2.08) | 0.710 |
No employment, n (%) | 91(75.84) | 87(72.5) | 178(74.2) | 0.550 |
Have medical insurance, n (%) | 60(50.0) | 48(40.0) | 108(45.0) | 0.120 |
HCV infection, n (%) | 85(70.83) | 83(69.16) | 168(70) | 0.358 |
HIV infection, n (%) | 0 | 0 | 0 | – |
duration of heroin use, M(SD), years | 11.51(7.97) | 10.40(5.13) | 10.89(6.42) | 0.203 |
length of receiving MMT, M(SD), years | 2.37(1.24) | 2.68(1.45) | 2.48(1.36) | 0.410 |
With alcohol use, n (%) | 28(23.3) | 52(43.3) | 80(37.08) | 0.001** |
HCV related knowledge, M(SD) | 6.923(3.165) | 6.10(3.77) | 6.51(3.5) | 0.072 |
HIV related knowledge, M(SD) | 21.30(6.91) | 20.14(9.73) | 20.57(6.54) | 0.695 |
HCV/HIV infection awareness | 7.89(2.31) | 9.06(2.99) | 8.35(2.8) | 0.001** |