| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 2 |
0.1%
|
| 0 | Never | 1902 |
79.3%
|
| 1 | Only once | 217 |
9.1%
|
| 2 | A few times | 208 |
8.7%
|
| 3 | Often | 65 |
2.7%
|
| 9 | Don’t know | 3 |
0.1%
|
| 98 | Refused | 0 |
0%
|