| History | Gender | Total | |
| Female | Male | ||
| None | 74 | 74 | 148 |
| Hypertension | 15 | 18 | 33 |
| Congenital Heart diseases | 2 | 1 | 3 |
| Renal disease | 33 | 36 | 69 |
| Diabetic | 34 | 19 | 53 |
| Vascular disease | 12 | 10 | 22 |
| Hypertension & Congenital Heart diseases | 6 | 14 | 20 |
| diabetic & vascular disease | 12 | 18 | 30 |
| Renal disease & diabetic | 10 | 12 | 22 |
| Total | Total | 202 | 400 |