| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 14 |
5.2%
|
| 2 | Every few weeks | 22 |
8.2%
|
| 3 | Every few months | 55 |
20.6%
|
| 4 | Not at all | 176 |
65.9%
|
| Sysmiss | 52 |