| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 1 |
1.5%
|
| 2 | Every few weeks | 6 |
9%
|
| 3 | Every few months | 12 |
17.9%
|
| 4 | Not at all | 48 |
71.6%
|
| Sysmiss | 16 |