| Electrocardiographic abnormalities | Workforce | Percentage (%) |
| Subendocardial ischemia | 12 | 9.02 |
| Subepicardial ischemia | 12 | 9.02 |
| Subendocardial lesion | 01 | 0.75 |
| Subepicardial lesion | 02 | 1.5 |
| Necrosis | 07 | 5.25 |
| Mirror image | 00 | 00 |
| Left ventricular hypertrophy | 13 | 9.75 |
| Right ventricular hypertrophy | 04 | 3 |
| Left atrial hypertrophy | 13 | 9.75 |
| Right atrial hypertrophy | 02 | 1.5 |
| Atrioventricular block | 1 | 0.75 |
| Hemi anterior block | 11 | 8.25 |
| Branch block | 6 | 4.5 |