| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 15 |
11.7%
|
| 2 | Every few weeks | 34 |
26.6%
|
| 3 | Every few months | 53 |
41.4%
|
| 4 | Not at all | 26 |
20.3%
|
| -99 | 2 | ||
| Sysmiss | 29 |