Table 1.
Summary of pre-intervention characteristics before and after village-selection, Camotán, Guatemala, Census 2002
| All villages |
Study sample |
|||||
|---|---|---|---|---|---|---|
| Mean | Control | Intervention | SDa | Control | Intervention | SDa |
| Male (%) | 51.2 | 50.7 | −1.0 | 52.2 | 51.6 | −1.3 |
| Children <5 years of age (%) | 18.8 | 19.5 | 1.7 | 19.5 | 19.4 | −0.2 |
| Age 7–14 that work (%) | 11.1 | 11.1 | 0.1 | 12.5 | 11.3 | −3.7 |
| Female literacy (%) | 42.4 | 41.8 | −1.2 | 38.2 | 41.6 | 7.0 |
| Work in agriculture (%) | 85.8 | 89.6 | 12.5 | 88.1 | 90.5 | 8.0 |
| Total households | 54.5 | 91.0 | 66.6 | 85.8 | 97.9 | 28.3 |
| Houses with tap water (%) | 52.5 | 73.3 | 47.0 | 59.8 | 67.8 | 17.2 |
| Houses with latrine (%) | 52.6 | 61.3 | 17.8 | 45.4 | 63.3 | 37.2 |
| Houses with electricity (%) | 45.3 | 60.8 | 31.8 | 46.9 | 55.1 | 16.5 |
| Houses with soil floors (%) | 75.0 | 80.5 | 14.0 | 79.2 | 79.4 | 0.5 |
| Houses with thatched roofs (%) | 44.8 | 49.8 | 9.8 | 47.6 | 48.9 | 2.8 |
| Distance to municipal centre (km) | 18.9 | 16.2 | −28.0 | 19.0 | 15.7 | −32.7 |
| Number of villages | 58 | 30 | 15 | 15 | ||
| Number of households | 3160 | 2731 | 1287 | 1469 | ||
aThe standardized difference is equal to the difference in standard deviation of the mean (I–C) multiplied by 100. It. is calculated as 
For example, a difference of 1 standard deviation is equal to 100. A value of zero indicates equality of the means.