Table 3 Comparison between both groups as regards to the perinatal risk factors and indications for referral
From: Clinical utility of fetal echocardiography: an Egyptian center experience
|  | Group A (n = 47) | Group B (n = 54) | Chi square X2 | P |
|---|---|---|---|---|
Abnormal Cardiac configuration by obstetric US | 31 | 15 | 14.769 | 0.000* |
Fetal arrhythmia by obstetric US | 7 | – | 8.641 | 0.003* |
No perinatal risk factors | 23 | 12 | 6.914 | 0.009* |
Perinatal risk factors | 24 | 42 | 7.919 | 0.005* |
 One risk factor | 14 | 17 | 0.34 | 0.854 |
 Two risk factors | 7 | 12 | 0.884 | 0.347 |
 ≥ 3 risk factors | 3 | 13 | 5.899 | 0.151 |