| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 0 |
0%
|
| 2 | Every few weeks | 20 |
8.3%
|
| 3 | Every few months | 143 |
59.1%
|
| 4 | Not at all | 79 |
32.6%
|
| Sysmiss | 52 |