Table 2. Prevalence of HIV, HCV, HBV infection and co-infection of two or three viruses among studied cohorts.
| Total (N = 2080) n(%) | Zhaotong (N1 = 570) n(%) | Qujing (N2 = 229) n(%) | Kaiyuan (N3 = 329) n(%) | Baoshan (N4 = 472) n(%) | Yingjiang (N5 = 480) n(%) | chi-square test P 2 value | |
| HIV | 531 (25.5) | 50 (8.8) | 71 (31.0) | 218 (66.3) | 20 (4.2) | 172 (35.8) | <0.001 |
| HCV | 1616 (77.7) | 468 (82.1) | 177 (77.3) | 293 (89.1) | 332 (70.3) | 346 (72.1) | <0.001 |
| HBV | 400 (19.2) | 74 (13.0) | 18 (7.9) | 61 (18.5) | 35 (7.4) | 212 (44.2) | <0.001 |
| HIV/HCV | 323 (15.5) | 43 (7.5) | 58 (25.3) | 122 (37.1) | 18 (3.8) | 82 (17.1) | <0.001 |
| HIV/HBV | 6 (0.3) | 0 (0) | 2 (0.9) | 0 (0) | 0 (0) | 4 (0.8) | 0.02 |
| HCV/HBV | 163 (7.8) | 55 (9.6) | 12 (5.2) | 0 (0) | 24 (5.1) | 72 (15.0) | <0.001 |
| HIV/HCV/HBV | 148 (7.1) | 4 (0.7) | 1 (0.4) | 61 (18.5) | 0 (0) | 82 (17.1) | <0.001 |
p 2 value showed the difference among 5 study sites.