| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 460 |
19.2%
|
| 1 | Once or twice | 208 |
8.7%
|
| 2 | A few times | 140 |
5.8%
|
| 3 | Often | 171 |
7.1%
|
| 7 | Not applicable | 1416 |
59%
|
| 8 | Refused | 2 |
0.1%
|
| 9 | Don't know | 3 |
0.1%
|