| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 875 |
72.9%
|
| 1 | Once or twice | 148 |
12.3%
|
| 2 | A few times | 96 |
8%
|
| 3 | Often | 75 |
6.3%
|
| 8 | Refused | 1 |
0.1%
|
| 9 | Don't know | 5 |
0.4%
|