| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 9 |
3.9%
|
| 2 | Every few weeks | 27 |
11.8%
|
| 3 | Every few months | 95 |
41.7%
|
| 4 | Not at all | 97 |
42.5%
|
| -99 | 5 | ||
| Sysmiss | 27 |