| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 23 |
6.6%
|
| 2 | Every few weeks | 72 |
20.8%
|
| 3 | Every few months | 172 |
49.7%
|
| 4 | Not at all | 79 |
22.8%
|
| Sysmiss | 94 |