| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. Never | 1715 |
77.3%
|
| 2 | 2. Once or twice | 309 |
13.9%
|
| 3 | 3. Several times | 162 |
7.3%
|
| 4 | 4. Often | 33 |
1.5%
|
| Sysmiss | 45132 |