| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 650 |
55%
|
| 1 | Only once | 80 |
6.8%
|
| 2 | A few times | 197 |
16.7%
|
| 3 | Often | 250 |
21.2%
|
| 9 | Don't know | 5 |
0.4%
|
| 98 | Refused | 0 |
0%
|