| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 8 |
2%
|
| 2 | Every few weeks | 44 |
10.9%
|
| 3 | Every few months | 81 |
20.1%
|
| 4 | Not at all | 269 |
66.9%
|
| Sysmiss | 73 |