| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1907 |
80.7%
|
| 1 | Only once | 190 |
8%
|
| 2 | A few times | 196 |
8.3%
|
| 3 | Often | 68 |
2.9%
|
| 9 | Don't know | 2 |
0.1%
|
| 998 | Refused | 0 |
0%
|