| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 934 |
77.8%
|
| 1 | Once or twice | 139 |
11.6%
|
| 2 | Several times | 101 |
8.4%
|
| 3 | Often | 21 |
1.8%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don’t know | 5 |
0.4%
|