| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 4 |
1.1%
|
| 2 | Every few weeks | 26 |
7.3%
|
| 3 | Every few months | 99 |
27.7%
|
| 4 | Not at all | 128 |
35.9%
|
| Sysmiss | 100 |
28%
|