| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 3 |
0%
|
| 0 | Never | 16335 |
58.9%
|
| 1 | Only once | 3028 |
10.9%
|
| 2 | A few times | 5037 |
18.2%
|
| 3 | Often | 3229 |
11.7%
|
| 9 | Don't know | 81 |
0.3%
|
| 998 | Refused | 0 |
0%
|