| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 2 |
0.1%
|
| 0 | Never | 1790 |
74.6%
|
| 1 | Only once | 232 |
9.7%
|
| 2 | A few times | 263 |
11%
|
| 3 | Often | 107 |
4.5%
|
| 9 | Don't know | 4 |
0.2%
|
| 98 | Refused | 0 |
0%
|