| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1803 |
75.1%
|
| 1 | Only once | 199 |
8.3%
|
| 2 | A few times | 286 |
11.9%
|
| 3 | Often | 99 |
4.1%
|
| 9 | Don't know | 13 |
0.5%
|
| 998 | Refused | 0 |
0%
|