Table 1 Comparison of the general data between the two groups

 Boys/girls

13/13

15/11

0.578

 Age (year)

3.31 ± 1.03

3.40 ± 1.01

0.613

 Height (cm)

92.81 ± 11.80

92.56 ± 13.78

0.446

 Weight (Kg)

15.49 ± 6.87

15.35 ± 4.50

0.319

 Ventricular septal defect

12

10

0.965

 Patent ductus arteriosus

1

2

 Atrial septal defect

4

3

 Pulmonary stenosis

2

3

 Pulmonary sequestration

4

5

 Congenital cystic adenomatoid lung malformation

3

3

Operation time (h)

2.96 ± 0.61

3.16 ± 0.46

0.874

 Operation with cardiopulmonary bypass

18

16

0.560

 Operation without cardiopulmonary bypass

8

10

 Median incision

18

16

0.772

 Left thoracic incision

4

6

 Right thoracic incision

4

4

The length of ICU stay (h)

9.8 ± 4.61

10.8 ± 5.32

0.412

The length of hospital stay (d)

5.5 ± 1.12

5.8 ± 1.35

0.731

 Age (year)

29.64 ± 4.23

28.75 ± 5.36

0.658

 Under high school

5

5

0.936

 High school

9

7

 Junior college

8

9

Bachelor degree or higher

4

5

 Rural area

16

14

0.575

 City

10

12