| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1072 |
89.3%
|
| 1 | Once or twice | 69 |
5.8%
|
| 2 | Several times | 26 |
2.2%
|
| 3 | Many times | 9 |
0.8%
|
| 8 | Refused | 2 |
0.2%
|
| 9 | Don't know | 22 |
1.8%
|