| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 10 |
10%
|
| 2 | Every few weeks | 20 |
20%
|
| 3 | Every few months | 56 |
56%
|
| 4 | Not at all | 14 |
14%
|
| Sysmiss | 13 |