| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 664 |
55.3%
|
| 1 | Once or twice | 235 |
19.6%
|
| 2 | A few times | 103 |
8.6%
|
| 3 | Often | 193 |
16.1%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 5 |
0.4%
|