| Value | Category | Cases | |
|---|---|---|---|
| 0 | No | 3455 |
90.2%
|
| 1 | Yes, Mild | 101 |
2.6%
|
| 2 | Yes, Moderate | 67 |
1.7%
|
| 3 | Yes, Severe | 110 |
2.9%
|
| 99 | Refuse | 96 |
2.5%
|
| Sysmiss | 316 |