| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 44 |
0.1%
|
| 0 | Never | 16298 |
31.6%
|
| 1 | Occasionally | 24276 |
47.1%
|
| 2 | Frequently | 10561 |
20.5%
|
| 9 | Don't know | 408 |
0.8%
|
| 998 | Refused | 0 |
0%
|