| Value | Category | Cases | |
|---|---|---|---|
| 1 | Do not wash water container | 230 |
7.5%
|
| 2 | Once or twice per year | 216 |
7%
|
| 3 | Between one and three times per month | 898 |
29.2%
|
| 4 | More than once per week | 1727 |
56.2%
|
| Sysmiss | 252 |