| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 4 |
6.2%
|
| 2 | Every few weeks | 13 |
20%
|
| 3 | Every few months | 23 |
35.4%
|
| 4 | Not at all | 9 |
13.8%
|
| Sysmiss | 16 |
24.6%
|