| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 592 |
24.7%
|
| 1 | Once or twice | 204 |
8.5%
|
| 2 | A few times | 170 |
7.1%
|
| 3 | Often | 214 |
8.9%
|
| 7 | Not applicable | 1217 |
50.7%
|
| 8 | Refused | 1 |
0%
|
| 9 | Don't know | 2 |
0.1%
|