| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 1 |
0.8%
|
| 2 | Every few weeks | 7 |
5.6%
|
| 3 | Every few months | 66 |
52.4%
|
| 4 | Not at all | 52 |
41.3%
|
| Sysmiss | 15 |