Table 3.
Estimates from Logit Regression Predicting E. Coli count (0 = Less than 2, 1 = 2 or more)
| Independent variables | Model I | Model II | Model III | Model IV |
|---|---|---|---|---|
| Minutes to water source | OR/(95% CI) 1.022** (1.005, 1.040) |
OR/(95% CI) 1.015* (0.998, 1.033) |
OR/(95%CI) 1.015* (.997, 1.033) |
OR/(95% CI) 1.012 (0.994, 1.030) |
| Water source | ||||
| Tap (ref.) | ||||
| Surface water | 5.152*** (1.786, 14.858) | 3.943** (1.335, 11.652) | 4.046** (1.355, 12.081) | 4.070** (1.359, 12.194) |
| Rainwater | 9.458* (0.937, 95.492) | 4.604 (0.439, 48.338) | 3.904 (0.359, 42.423) | 3.224 (0.290, 35.807) |
| Well | 24.914*** (3.409, 182.069) | 21.529*** (2.935, 157.928) | 25.123*** (3.270, 192.999) | 24.411*** (3.142, 189.641) |
| Borehole | 1.948*** (1.117, 3.392) | 1.795** (1.024, 3.148) | 1.742* (0.989, 3.086) | 1.612 (906, 2.867) |
| Tanker | 2.380 (0.519, 10.897) | 1.874 (0.379, 9.257) | 1.696 (0.341, 8.428) | 2.023 (0.400, 10.230) |
| Bottle or sachet | 0.309* (0.127, 0.755) | 0.429* (0.167, 1.101) | 0.451 (0.137, 1.172) | 0.609 (0.227, 1.631) |
| Toilet type | ||||
| Water closet (ref.) | ||||
| No toilet | 4.451*** (2.258, 8.773) | 3.780*** (1.808, 7.902) | 3.169*** (1.436, 6.994) | |
| Pit | 2.976*** (1.714, 5.166) | 2.298*** (1.536, 4.739) | 2.238*** (1.222, 4.101) | |
| Where waste is disposed | ||||
| Public pit (ref.) | ||||
| Public bin | 4.252** (1.363, 13.267) | 4.282** (1.373, 13.356) | ||
| Bush | 3.786** (1.163, 12.325) | 3.692** (1.124, 12.118) | ||
| Beach or lagoon | 4.77** (1.330, 17.109) | 5.125** (1.429, 18.388) | ||
| Other disposal mechanism | 1.387 (0.118, 16.241) | 1.294 (0.112, 15.001) | ||
| Electricity (none ref.) | 1.046 (0.686, 1.593) | |||
| Residence (urban ref.) | 1.387 (0.910, 2.115) | |||
| Household size | 1.092** (1.006, 1.186) | |||
| Possessions | 0.936 (0.855, 1.026) | |||
| Owns farmland (does not own ref.) |
1.047 (697, 1.573) | |||
| N | 703 | 703 | 703 | 703 |
| Pseudo R 2 | 0.10 | 0.12 | 0.13 | 0.15 |
*
P < 0.10
**
P < 0.05
***
P < 0.01