| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1315 |
82.2%
|
| 1 | Once or twice | 158 |
9.9%
|
| 2 | Several times | 92 |
5.8%
|
| 3 | Many times | 33 |
2.1%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 2 |
0.1%
|