| Variable | Population size | Pourcentage |
| ECG |
|
|
| AVB complete | 1 | 1 |
| Normal QRS axis | 15 | 13 |
| Right QRS axis | 26 | 22 |
| ECG Not performed | 60 | 52 |
| Chest X-ray |
|
|
| Cardiomegaly | 51 | 44 |
| Without anomaly | 5 | 4 |
| Not available | 60 | 52 |