| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 1 |
0.1%
|
| 0 | Never | 965 |
80.4%
|
| 1 | Only once | 48 |
4%
|
| 2 | A few times | 79 |
6.6%
|
| 3 | Often | 106 |
8.8%
|
| 9 | Don't know | 1 |
0.1%
|
| 98 | Refused | 0 |
0%
|