| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 1 |
0.1%
|
| 0 | Never | 1012 |
84.3%
|
| 1 | Only once | 31 |
2.6%
|
| 2 | A few times | 67 |
5.6%
|
| 3 | Often | 71 |
5.9%
|
| 9 | Don't know | 18 |
1.5%
|
| 998 | Refused | 0 |
0%
|