| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 801 |
66.8%
|
| 1 | Only once | 81 |
6.8%
|
| 2 | A few times | 187 |
15.6%
|
| 3 | Often | 131 |
10.9%
|
| 9 | Don't know | 0 |
0%
|
| 98 | Refused | 0 |
0%
|