| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1073 |
89.4%
|
| 1 | Once or twice | 50 |
4.2%
|
| 2 | Several times | 45 |
3.8%
|
| 3 | Many times | 25 |
2.1%
|
| 8 | Refused | 2 |
0.2%
|
| 9 | Don't Know | 5 |
0.4%
|