| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1017 |
84.8%
|
| 1 | Once or twice | 113 |
9.4%
|
| 2 | Several times | 61 |
5.1%
|
| 3 | Often | 9 |
0.8%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don’t know | 0 |
0%
|