| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 3340 |
64.9%
|
| 2 | < 1/4 | 754 |
14.6%
|
| 3 | 1/4 - 1/2 | 425 |
8.3%
|
| 4 | >1/2 | 468 |
9.1%
|
| 5 | Do not know | 161 |
3.1%
|
| Sysmiss | 20294 |