| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 11 |
1.8%
|
| 2 | Every few weeks | 30 |
5%
|
| 3 | Every few months | 87 |
14.4%
|
| 4 | Not at all | 419 |
69.1%
|
| Sysmiss | 59 |
9.7%
|