| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 906 |
75.5%
|
| 1 | Only once | 61 |
5.1%
|
| 2 | A few times | 125 |
10.4%
|
| 3 | Often | 103 |
8.6%
|
| 8 | Refused | 2 |
0.2%
|
| 9 | Don’t know | 3 |
0.3%
|