| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 15 |
5.5%
|
| 2 | Every few weeks | 27 |
10%
|
| 3 | Every few months | 98 |
36.2%
|
| 4 | Not at all | 131 |
48.3%
|
| Sysmiss | 48 |