| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing data | 0 |
0%
|
| 1 | Never | 2048 |
85%
|
| 2 | Once or twice | 227 |
9.4%
|
| 3 | A few times | 34 |
1.4%
|
| 4 | Often | 48 |
2%
|
| 9 | Don't know | 53 |
2.2%
|
| 999 | Refused | 0 |
0%
|