| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | No | 2315 |
96.5%
|
| 1 | Yes, once or twice | 49 |
2%
|
| 2 | Yes, several times | 27 |
1.1%
|
| 3 | Yes, often | 9 |
0.4%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 0 |
0%
|