| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 144 |
12%
|
| 1 | Once or twice | 77 |
6.4%
|
| 2 | A few times | 40 |
3.3%
|
| 3 | Often | 54 |
4.5%
|
| 7 | Not applicable | 881 |
73.4%
|
| 8 | Refused | 1 |
0.1%
|
| 9 | Don't know | 3 |
0.3%
|