Table 1 Characteristics of participants in relation to intravenous injection behavior

Age (years)

56.87 ± 9.23

45.96 ± 12.77

Z = −12.95

<0.001

Sex (male/female)

299/126

80/347

χ² = 229.801

<0.001

Positive anti-HCV, n (%)

295 (69.4)

21 (4.9)

χ² = 379.699

<0.001

Positive HCV RNA, n (%)

222 (52.2)

5 (1.2)

χ² = 284.175

<0.001

Positive anti-HBc, n (%)

334 (78.6)

243 (56.9)

χ² = 45.798

<0.001

Positive HBsAg, n (%)

44 (10.4)

47 (11.0)

χ² = 0.096

0.757

Positive anti-HCV and anti-HBc, n (%)

242 (56.9)

14 (3.3)

χ² = 291.818

<0.001

Positive HCV RNA and HBsAg, n (%)

12 (2.8)

0 (0)

χ² = 12.229

<0.001