| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 29 |
0.1%
|
| 0 | Never | 10931 |
45%
|
| 1 | Just once or twice | 7837 |
32.2%
|
| 2 | Many times | 4606 |
19%
|
| 3 | Always | 726 |
3%
|
| 9 | Don't Know | 172 |
0.7%
|
| 98 | Refused | 0 |
0%
|