| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0. not at all | 1149 |
75.6%
|
| 1 | 1. once | 218 |
14.4%
|
| 2 | 2. 2-3 times | 101 |
6.6%
|
| 3 | 3. 4 or more times | 51 |
3.4%
|
| Sysmiss | 44 |