| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 37 |
6.8%
|
| 2 | Every few weeks | 147 |
27.2%
|
| 3 | Every few months | 229 |
42.3%
|
| 4 | Not at all | 128 |
23.7%
|
| Sysmiss | 22 |