| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. Never | 1848 |
83.3%
|
| 2 | 2. Once or twice | 200 |
9%
|
| 3 | 3. Several times | 136 |
6.1%
|
| 4 | 4. Often | 35 |
1.6%
|
| Sysmiss | 45132 |