| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 12 |
1%
|
| 0 | Never | 1041 |
86.9%
|
| 1 | Once or twice | 56 |
4.7%
|
| 2 | Several times | 33 |
2.8%
|
| 3 | Many times | 20 |
1.7%
|
| 8 | Refused | 36 |
3%
|
| 9 | Don't know | 0 |
0%
|