| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 1 |
0%
|
| 0 | Never | 2096 |
87.3%
|
| 1 | Only once | 95 |
4%
|
| 2 | A few times | 140 |
5.8%
|
| 3 | Often | 62 |
2.6%
|
| 9 | Don't know | 6 |
0.3%
|
| 98 | Refused | 0 |
0%
|