| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 971 |
81%
|
| 1 | Only once | 96 |
8%
|
| 2 | A few times | 75 |
6.3%
|
| 3 | Often | 57 |
4.8%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don’t know | 0 |
0%
|