| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 540 |
45%
|
| 1 | Only once | 67 |
5.6%
|
| 2 | A few times | 150 |
12.5%
|
| 3 | Often | 436 |
36.3%
|
| 8 | Refused | 3 |
0.3%
|
| 9 | Don’t know | 4 |
0.3%
|