| Variables | M0―UAPS |
| M1―2 months |
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| Control | Intervention |
| Control | Intervention |
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| Mean | ±SEM | Mean | ±SEM | p(1) | Mean | ±SEM | Mean | ±SEM | p(1) | |
| Type of House |
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| Bricks and Mortar | 101.0 | 1.2 | 103.0 | 1.1 | 0.273 | 107.5 | 1.3 | 109.1 | 1.2 | 0.392 |
| Others | 101.1 | 1.5 | 104.0 | 1.6 | 0.225 | 104.6 | 1.9 | 111.4 | 1.8 | 0.014 |
| Floor of House |
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| Ceramic | 101.4 | 1.9 | 102.7 | 1.89 | 0.635 | 106.9 | 1.8 | 111.5 | 1.9 | 0.102 |
| Others | 100.9 | 1.23 | 103.5 | 1.1 | 0.127 | 106.5 | 1.3 | 109.2 | 1.2 | 0.158 |
| Refuse Collection |
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| Public | 100.9 | 1.0 | 103.5 | 0.9 | 0.069 | 106.4 | 1.1 | 109.6 | 1.0 | 0.045 |
| Others | 112.0 | - | 96.0 | 2.6 | 0.094 | 120.0 | - | 114.3 | 2.8 | 0.425 |
| Origin of the Water That Supplies the House |
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| Piped―Public | 101.2 | 1.0 | 103.5 | 0.9 | 0.117 | 106.5 | 1.1 | 109.8 | 1.0 | 0.035 |
| Others | 94.0 | 3.0 | 97.6 | 0.8 | 0.240 | 116.0 | - | 109.0 | 6.6 | 0.652 |
| Origin of the Water That the Child Drinks |
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| Mineral | 100.8 | 1.1 | 103.2 | 1.0 | 0.143 | 107.1 | 1.2 | 110.6 | 1.1 | 0.040 |
| Others | 102.3 | 2.2 | 103.6 | 2.0 | 0.706 | 103.9 | 2.9 | 107.5 | 2.3 | 0.350 |
| Treatment of the Child’s Water |
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| Yes | 104.7 | 2.8 | 109.9 | 1.9 | 0.177 | 109.0 | 2.6 | 114.4 | 1.3 | 0.103 |
| No | 100.3 | 1.0 | 102.2 | 1.0 | 0.211 | 106.2 | 1.2 | 109.1 | 1.1 | 0.098 |
| Sewage |
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| Public | 99.7 | 2.7 | 102.4 | 2.6 | 0.494 | 105.9 | 2.8 | 114.6 | 1.6 | 0.013 |
| Cesspool or Other | 101.4 | 1.1 | 103.5 | 1.0 | 0.160 | 106.8 | 1.2 | 108.7 | 1.2 | 0.270 |