| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 939 |
78.3%
|
| 1 | Once or twice | 66 |
5.5%
|
| 2 | Several times | 129 |
10.8%
|
| 3 | Many times | 58 |
4.8%
|
| 8 | Refused | 5 |
0.4%
|
| 9 | Don't know | 3 |
0.3%
|