| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 7 |
4.1%
|
| 2 | Every few weeks | 28 |
16.3%
|
| 3 | Every few months | 42 |
24.4%
|
| 4 | Not at all | 83 |
48.3%
|
| Sysmiss | 12 |
7%
|