| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 14 |
9.5%
|
| 2 | Every few weeks | 13 |
8.8%
|
| 3 | Every few months | 24 |
16.3%
|
| 4 | Not at all | 95 |
64.6%
|
| -99 | 1 |
0.7%
|
|
| Sysmiss | 18 |