| Value | Category | Cases | |
|---|---|---|---|
| 1 | Seldom | 11 |
0.6%
|
| 2 | Regular | 8 |
0.5%
|
| 3 | Often | 4 |
0.2%
|
| 4 | Never | 1342 |
78%
|
| 97 | Refused | 0 |
0%
|
| 98 | Don't know | 347 |
20.2%
|
| 99 | Missing | 9 |
0.5%
|
| Sysmiss | 4 |