| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1019 |
84.4%
|
| 1 | Only once | 76 |
6.3%
|
| 2 | A few times | 77 |
6.4%
|
| 3 | Often | 31 |
2.6%
|
| 9 | Don't know | 5 |
0.4%
|
| 998 | Refused | 0 |
0%
|