| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | No | 1112 |
92.7%
|
| 1 | Yes, once or twice | 43 |
3.6%
|
| 2 | Yes, several times | 28 |
2.3%
|
| 3 | Yes, often | 16 |
1.3%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 1 |
0.1%
|