| Value | Category | Cases | |
|---|---|---|---|
| 1 | Sudden | 38 |
11.7%
|
| 2 | Gradual: <1 hour | 60 |
18.4%
|
| 3 | Gradual: >1 hour | 66 |
20.2%
|
| 4 | Evolved > 24 Hrs | 80 |
24.5%
|
| 5 | Chronic (weeks or more) | 69 |
21.2%
|
| 8 | Unknown | 13 |
4%
|
| Sysmiss | 77 |