| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. Never | 1923 |
86.7%
|
| 2 | 2. Once or twice | 182 |
8.2%
|
| 3 | 3. Several times | 94 |
4.2%
|
| 4 | 4. Often | 20 |
0.9%
|
| Sysmiss | 45132 |