| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1946 |
81.1%
|
| 1 | Only once | 199 |
8.3%
|
| 2 | A few times | 203 |
8.5%
|
| 3 | Often | 45 |
1.9%
|
| 9 | Don't know | 7 |
0.3%
|
| 98 | Refused | 0 |
0%
|