| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 20 |
16.4%
|
| 2 | Every few weeks | 21 |
17.2%
|
| 3 | Every few months | 60 |
49.2%
|
| 4 | Not at all | 21 |
17.2%
|
| Sysmiss | 19 |