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Table 1 Preoperative data comparison among three groups of patients

From: Surgical repair via submammary thoracotomy, right axillary thoracotomy and median sternotomy for ventricular septal defects

Item Group A Group B Group C P
N 56 62 64  
Age (year) 1.1 ± 1.4 1.3 ± 1.2 1.3 ± 1.5 P > 0.05
Gender (M/F) 26/30 31/31 30/34 P > 0.05
Weight (kg) 6.1 ± 3.2 8.3 ± 2.3 8.4 ± 2.5 P > 0.05
Size of VSD (mm) 6.2 ± 1.05 5.3 ± 1.12 5.1 ± 1.04 P > 0.05
Perimembrous VSD 48 60 63  
Muscular VSD 1 0 0  
Subatrial VSD 7 2 1  
Pulmonary hypertension (mmhg) 45.2 ± 11.7 42.1 ± 8.2 40.5 ± 9.2 P > 0.05
Cardiothoracic ratio 0.61 ± 0.10 0.56 ± 0.08 0.57 ± 0.06 P > 0.05