| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 29 |
0.1%
|
| 0 | Never | 7610 |
30%
|
| 1 | Occasionally | 11680 |
46%
|
| 2 | Frequently | 5795 |
22.8%
|
| 9 | Don't know | 283 |
1.1%
|
| 998 | Refused | 0 |
0%
|