| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 892 |
74.3%
|
| 1 | Once or twice | 167 |
13.9%
|
| 2 | A few times | 99 |
8.3%
|
| 3 | Often | 42 |
3.5%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 0 |
0%
|