| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 1 |
0.5%
|
| 2 | Every few weeks | 16 |
7.7%
|
| 3 | Every few months | 75 |
36.2%
|
| 4 | Not at all | 115 |
55.6%
|
| Sysmiss | 46 |