| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | yes, by boiling | 552 | 166391 |
3.8%
|
| 2 | yes, by filtering | 472 | 88295 |
2%
|
| 3 | yes, by chemical treatment | 499 | 106330 |
2.4%
|
| 4 | yes, using bottled water | 1767 | 443590 |
10.1%
|
| 5 | other | 117 | 19083 |
0.4%
|
| 6 | no | 14411 | 3560521 |
81.2%
|
| Sysmiss | 4 | 837 |