| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 7 |
3.2%
|
| 2 | Every few weeks | 24 |
11%
|
| 3 | Every few months | 44 |
20.1%
|
| 4 | Not at all | 144 |
65.8%
|
| Sysmiss | 38 |