| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 39 |
7.8%
|
| 2 | Every few weeks | 167 |
33.4%
|
| 3 | Every few months | 227 |
45.4%
|
| 4 | Not at all | 67 |
13.4%
|
| -99 | 26 | ||
| Sysmiss | 54 |