| No. |
| Study group | Control (20 - 30 years) | Total |
| 100 (50 male, 50 female) | 100 (50 male, 50 female) | 200 | ||
| Age (years) | Range Mean SD± | 50 - 93 67.3 7.8 | 20 - 30 22.01 1.8 |
|
| Duration of disease (weeks) | Range Median Mean SD± | 1 - 1080 430 537 ±64.3 | 1 - 158 78 94 ±28.7 |
|