| Length of storage | Escherichia coli | OR (IC95%) | p-value | |
| Present | Absent | |||
| 24 hours | 7 | 63 | 4.41 (1.92 - 10.11) | 0.000 |
| >24 hours | 73 | 149 |
|
|
| Water treatment |
|
|
|
|
| Yes | 17 | 31 | 0.635 (0.329 - 1.225) | 0.175 |
| No | 63 | 181 |
|
|
| Water access time |
|
|
|
|
| <30 minutes | 67 | 191 | 177 (0.84 - 3.72) | 0.135 |
| >30 minutes | 13 | 21 |
|
|
| Class of risk according to WHO |
|
|
| |
| Without risk | 5 | 52 | 95.126** | 0.000 |
| Low risk | 2 | 57 |
|
|
| Medium risk | 46 | 102 |
|
|
| High risk | 27 | 1 |
|
|
| Types of recipients of conservation |
|
|
| |
| With bottleneck | 67 | 177 | 8.67** | 0.013 |
| Without bottleneck | 2 | 1 |
|
|
| With covers | 4 | 1 |
|
|