| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 852 |
71%
|
| 1 | Once or twice | 145 |
12.1%
|
| 2 | A few times | 107 |
8.9%
|
| 3 | Often | 96 |
8%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 0 |
0%
|