| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 7 |
9.6%
|
| 2 | Every few weeks | 18 |
24.7%
|
| 3 | Every few months | 40 |
54.8%
|
| 4 | Not at all | 8 |
11%
|
| Sysmiss | 23 |