| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 1 |
1.4%
|
| 2 | Every few weeks | 9 |
12.5%
|
| 3 | Every few months | 32 |
44.4%
|
| 4 | Not at all | 30 |
41.7%
|
| Sysmiss | 12 |