| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 12 |
0%
|
| 0 | Never | 20595 |
84.7%
|
| 1 | Only once | 1402 |
5.8%
|
| 2 | A few times | 1456 |
6%
|
| 3 | Often | 637 |
2.6%
|
| 9 | Don't know | 199 |
0.8%
|
| 98 | Refused | 0 |
0%
|