Table 5.
Multivariate analysis of the associations between household characteristics and case-control status
| Predictive factors | Crude odds ratio (95% CI) |
Adjusted oddsa ratio (95% CI) |
|---|---|---|
| Number of household members | ||
| ≤ 6 | 1.00 | 1.00 |
| > 6 | 1.16 (0.63–2.12) | 1.48 (0.70–3.13) |
| Person per net ratio | ||
| ≤ 2.5 | 1.00 | 1.00 |
| > 2.5 | 0.92 (0.50–1.67) | 0.83 (0.40–1.71) |
| Type of water used for daily life | ||
| Stream water | 1.00 | 1.00 |
| Water other than stream water | 1.19 (0.66–2.15) | 1.50 (0.70–3.21) |
| Wealth index quartiles | ||
| First (least poor) | 1.00 | 1.00 |
| Second | 1.50 (0.65–3.45) | 1.67 (0.63–4.38) |
| Third | 1.67 (0.69–4.02) | 2.35 (0.77–7.14) |
| Fourth (poorest) | 2.65 (1.18–5.96) | 6.16 (1.92–19.72) |
| Wall materials | ||
| Brick | 1.00 | 1.00 |
| Other | 0.96 (0.50–1.64) | 0.97 (0.40–2.35) |
| Flooring materials | ||
| Wood | 1.00 | 1.00 |
| Other | 0.46 (0.24–0.91) | 0.25 (0.09–0.68) |
| Roofing materials | ||
| Zinc | 1.00 | 1.00 |
| Other | 0.47 (0.19–1.18) | 0.61 (0.21–1.75) |
| Open space in the house | ||
| No | 1.00 | 1.00 |
| Yes | 3.50 (1.82–6.70) | 3.64 (1.68–7.84) |
| Kitchen location | ||
| Inside the house | 1.00 | 1.00 |
| Outside the house | 1.24 (0.66–2.33) | 0.94 (0.35–2.48) |
| Cattle keeping near the house | ||
| No | 1.00 | 1.00 |
| Yes | 1.35 (0.73–2.48) | 1.78 (0.85–3.74) |
| Weed management within 10 m around the house | ||
| Poor | 1.00 | 1.00 |
| Good | 0.66 (0.36–1.20) | 0.67 (0.32–1.39) |
aAdjusted for number of household members, person per net ratio, type of water used for daily life, wealth index, wall materials, flooring materials, roofing materials, open space in the house, kitchen location, cattle keeping near the house, weed management within 10 m around the house