| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | No | 1145 |
95.4%
|
| 1 | Yes, once or twice | 19 |
1.6%
|
| 2 | Yes, several times | 22 |
1.8%
|
| 3 | Yes, often | 13 |
1.1%
|
| 8 | Refused | 1 |
0.1%
|
| 9 | Don't know | 0 |
0%
|