| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 24 |
0.1%
|
| 0 | Never | 8581 |
31%
|
| 1 | Occasionally | 12805 |
46.2%
|
| 2 | Frequently | 6106 |
22%
|
| 9 | Don't know | 197 |
0.7%
|
| 998 | Refused | 0 |
0%
|