| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0. not at all | 1243 |
81.8%
|
| 1 | 1. once | 208 |
13.7%
|
| 2 | 2. 2-3 times | 59 |
3.9%
|
| 3 | 3. 4 or more times | 9 |
0.6%
|
| Sysmiss | 44 |