| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 13 |
8.8%
|
| 2 | Every few weeks | 11 |
7.4%
|
| 3 | Every few months | 34 |
23%
|
| 4 | Not at all | 89 |
60.1%
|
| -99 | 1 |
0.7%
|
|
| Sysmiss | 17 |