| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 4 |
3.4%
|
| 2 | Every few weeks | 10 |
8.6%
|
| 3 | Every few months | 24 |
20.7%
|
| 4 | Not at all | 78 |
67.2%
|
| Sysmiss | 40 |