| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 5 |
2.5%
|
| 2 | Every few weeks | 19 |
9.6%
|
| 3 | Every few months | 88 |
44.4%
|
| 4 | Not at all | 86 |
43.4%
|
| Sysmiss | 18 |