| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 2 |
0.7%
|
| 2 | Every few weeks | 23 |
7.5%
|
| 3 | Every few months | 90 |
29.3%
|
| 4 | Not at all | 192 |
62.5%
|
| Sysmiss | 89 |