| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 12 |
4.2%
|
| 2 | Every few weeks | 26 |
9%
|
| 3 | Every few months | 73 |
25.3%
|
| 4 | Not at all | 178 |
61.6%
|
| Sysmiss | 12 |