Table 1 Prevalence of HAV antibodies according to individual and household-level risk factors
Variable | No. of subjectsa | HAV antibody prevalence (%) | Odds ratio (95% CI) | P |
|---|---|---|---|---|
Age (years) | ||||
5-10 | 69 | 46.4 | 1.00 | <0.0001b |
11-20 | 111 | 80.2 | 4.68 (2.28-9.61) | |
21-30 | 67 | 95.5 | 24.67 (6.84-131.24) | |
31-50 | 103 | 97.1 | 38.54 (10.82-203.18) | |
>50 | 47 | 93.6 | 16.96 (4.63-91.28) | |
Sex | ||||
Female | 190 | 84.7 | 1.29 (0.74-2.26) | 0.417 |
Male | 207 | 81.1 | 1.00 | |
Past history of hepatitis | ||||
No | 345 | 81.4 | 1.00 | 0.082 |
Yes | 52 | 93.2 | 2.73 (0.95-10.79) | |
Education of household head (years of schooling) | ||||
0 | 81 | 87.6 | 2.12 (0.76-6.01) | 0.418b |
1-4 | 186 | 77.4 | 1.20 (0.52-2.63) | |
5-8 | 84 | 88.1 | 2.22 (0.80-6.26) | |
>8 | 52 | 76.9 | 1.00 | |
Wealth index (quartiles)c | ||||
1 (poorest) | 112 | 83.0 | 1.06 (0.47-2.39) | 0.973b |
2 | 101 | 82.2 | 1.00 (0.44-2.28) | |
3 | 100 | 84.0 | 1.14 (0.49-2.66) | |
4 (least poor) | 84 | 82.1 | 1.00 | |
Water source | ||||
Well | 375 | 82.4 | 1.00 | 0.462 |
River/stream | 22 | 90.9 | 2.14 (0.50-19.27) | |
Drinking water filtrated or chlorinated | ||||
Yes | 308 | 83.4 | 1.00 | 0.523 |
No | 73 | 79.4 | 0.77 (0.39-1.58) | |
Crowding (number of inhabitants/room) | ||||
<1 | 168 | 86.9 | 1.00 | 0.930b |
1-1.9 | 187 | 77.5 | 0.52 (0.28-0.94) | |
2-3 | 18 | 77.8 | 0.53 (0.15-2.41) | |
>3 | 24 | 100 | Not calculable | |