| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 576 |
48%
|
| 1 | Only once | 115 |
9.6%
|
| 2 | A few times | 201 |
16.8%
|
| 3 | Often | 299 |
24.9%
|
| 9 | Don't know | 8 |
0.7%
|
| 98 | Refused | 0 |
0%
|