| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 20 |
4.1%
|
| 2 | Every few weeks | 73 |
15.1%
|
| 3 | Every few months | 166 |
34.4%
|
| 4 | Not at all | 112 |
23.2%
|
| Sysmiss | 111 |
23%
|