Table 2.
Prevalence ratios (PR) and 95% confidence intervals (CI) for schistosomiasis infection of individuals/heads of households according to socioeconomic and exposure variables
| Variable | No. of individuals | PR | 95% CI |
|---|---|---|---|
| Education, head of household | |||
| None | 325 | 1.26 | (1.03 – 1.55) |
| Some | 234 | 1.00 | |
| Generalized score statistic = 5.14, df = 1, p = .0234 | |||
| Occupation, head of household | |||
| Agriculture | 293 | 1.14 | (0.90 – 1.45) |
| All other occupations | 122 | 1.10 | (0.82 – 1.48) |
| Retired or handicapped | 144 | 1.00 | |
| Generalized score statistic = 1.26, df = 2, p = .5329 | |||
| Family income | |||
| 0 ≤ income < 180 | 132 | 1.16 | (0.92 – 1.46) |
| 180 ≤ income < 360 | 239 | 0.99 | (0.78 – 1.25) |
| 360 ≤ income < 3000 | 188 | 1.00 | |
| Generalized score statistic = 2.13, df = 2, p = .3443 | |||
| House ownership | |||
| No | 95 | 1.18 | (0.98 – 1.44) |
| Yes | 4644 | 1.00 | |
| Generalized score statistic = 2.31, df = 1, p = .1287 | |||
| Land ownership | |||
| No | 389 | 1.00 | (0.80 – 1.24) |
| Yes | 170 | 1.00 | |
| Generalized score statistic = 0.00, df = 1, p = .9740 | |||
| Quality of housing | |||
| Poor | 167 | 1.15 | (0.96 – 1.38) |
| Good | 392 | 1.00 | |
| Generalized score statistic = 2.10, df = 1, p = .1472 | |||
| Number of persons per room | |||
| 1.33 ≤ x < 4.00 | 136 | 1.33 | (1.07 – 1.63) |
| 0.80 ≤ x < 1.33 | 167 | 0.99 | (0.76 – 1.28) |
| 0.60 ≤ x < 0.80 | 123 | 0.78 | (0.59 – 1.03) |
| 0.14 ≤ x < 0.60 | 133 | 1.00 | |
| Generalized score statistic = 12. 92, df = 3, p = .0048 | |||
| Household possessions | |||
| No car or motorbike | 508 | 1.96 | (1.29 – 2.98) |
| Car and/or motorbike | 51 | 1.00 | |
| Generalized score statistic = 8.43, df = 1, p = .0037 | |||
| Water supply and accessibility | |||
| Some form of unsafe water(either stream and/or unprotected water and/or an unprotected spring and/or a well) | 140 | 1.07 | (0.80 – 1.43) |
| Safe water supply(no stream, no unprotected water, no unprotected spring, and no well), but lacking some combination of water tank, basin, faucet, and/or shower | 257 | 1.03 | (0.82 – 1.30) |
| Safe water supply(no stream, no unprotected water, no unprotected spring, and no well), and has a water tank, a basin, a faucet, and a shower | 162 | 1.00 | |
| Generalized score statistic = 0.20, df = 2, p = .9034 | |||
| Unsafe water contact | |||
| Yes | 408 | 1.70 | (1.28 – 2.25) |
| No | 141 | 1.00 | |
| Generalized score statistic = 15.16, df = 1, p < .0001 | |||
| Sanitation | |||
| No latrine | 81 | 1.29 | (0.96 – 1.73) |
| Pit latrine | 325 | 1.09 | (0.85 – 1.40) |
| Flush latrine | 153 | 1.00 | |
| Generalized score statistic = 2.56, df = 2, p = .2779 | |||