| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0. not at all | 1265 |
83.3%
|
| 1 | 1. once | 186 |
12.2%
|
| 2 | 2. 2-3 times | 50 |
3.3%
|
| 3 | 3. 4 or more times | 18 |
1.2%
|
| Sysmiss | 44 |