Table 3 HCV positivity by age and number of births, separately for Mongolia, Pakistan and China
| Â | Mongolia | Pakistan | China | ||||||
|---|---|---|---|---|---|---|---|---|---|
Risk factor | N tested | HCV positive N (%) | Adjusted PRa and 95% CI | N tested | HCV positive N (%) | Adjusted PRa and 95% CI | N tested | HCV positive N (%) | Adjusted PRa and 95% CI |
Age | 1,075 | Â | Â | 963 | Â | Â | 3,445 | Â | Â |
 <35 | 511 | 55 (10.8) | 1 | 479 | 7 (1.5) | 1 | 1,915 | 5 (0.3) | 1 |
 35-44 | 289 | 54 (18.7) | 1.74 (1.23-2.45) | 254 | 12 (4.7) | 3.23 (1.29-8.11) | 755 | 4 (0.5) | 2.03 (0.55-7.54) |
 ≥45 | 275 | 78 (28.4) | 2.63 (1.93-3.60) | 230 | 12 (5.2) | 3.57 (1.42-8.95) | 775 | 9 (1.2) | 4.45 (1.49-13.2) |
 χ 21 for trend |  |  | p < 0.001 |  |  | p = 0.005 |  |  | p = 0.007 |
Number of births | 1,056 | Â | Â | 955 | Â | Â | 3,225 | Â | Â |
 0 | 228 | 16 (7.0) | 1 | 136 | 1 (0.7) | 1 | 942 | 2 (0.2) | 1 |
 ≥1 | 828 | 169 (20.4) | 1.62 (0.86-3.04) | 819 | 30 (3.7) | 3.06 (0.39-24.1) | 2,283 | 16 (0.7) | 0.48 (0.06-3.82) |