| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 912 |
76%
|
| 1 | Only once | 89 |
7.4%
|
| 2 | A few times | 115 |
9.6%
|
| 3 | Often | 84 |
7%
|
| 9 | Don't know | 0 |
0%
|
| 98 | Refused | 0 |
0%
|