| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 11 |
5.7%
|
| 2 | Every few weeks | 21 |
10.8%
|
| 3 | Every few months | 24 |
12.4%
|
| 4 | Not at all | 86 |
44.3%
|
| Sysmiss | 52 |
26.8%
|