| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 8 |
2.2%
|
| 2 | Every few weeks | 33 |
9%
|
| 3 | Every few months | 122 |
33.2%
|
| 4 | Not at all | 155 |
42.1%
|
| Sysmiss | 50 |
13.6%
|