| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 40 |
8.3%
|
| 2 | Every few weeks | 76 |
15.7%
|
| 3 | Every few months | 201 |
41.6%
|
| 4 | Not at all | 138 |
28.6%
|
| Sysmiss | 28 |
5.8%
|