| Value | Category | Cases | |
|---|---|---|---|
| -1 | missing | 0 |
0%
|
| 0 | never | 1251 |
92.7%
|
| 1 | sometimes | 70 |
5.2%
|
| 2 | often | 19 |
1.4%
|
| 3 | always | 4 |
0.3%
|
| 9 | don't know | 6 |
0.4%
|