| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | yes, by boiling | 624 | 170684 |
3.9%
|
| 2 | yes, by filtering | 212 | 36859 |
0.8%
|
| 3 | yes, by chemical treatment | 171 | 34559 |
0.8%
|
| 4 | yes, using bottled water | 914 | 262065 |
6%
|
| 5 | other | 54 | 9468 |
0.2%
|
| 6 | no | 15843 | 3870575 |
88.3%
|
| Sysmiss | 4 | 837 |