| Value | Category | Cases | |
|---|---|---|---|
| -1 | missing | 0 |
0%
|
| 0 | never | 13434 |
25.1%
|
| 1 | once or twice | 3183 |
6%
|
| 2 | a few times | 2629 |
4.9%
|
| 3 | often | 2129 |
4%
|
| 7 | not applicable | 31993 |
59.9%
|
| 8 | refused | 19 |
0%
|
| 9 | don't know | 57 |
0.1%
|