Table 3. Changes of left ventricular ejection fraction (EF) between the infant- and adult-types before and after operation.

Ejection fraction (%)	Infant-type (n=20)	Adult-type (n=10)	P value
Before-operation	46.24±5.47	61.43±6.38▲	0.006
Post-operation	60.12±6.02▲	63.30±6.78§	0.241

Before-operation vs. post-operation: ^▲, P<0.01. Infant-type vs. adult-type: ^▲, P<0.01; ^§, P>0.05.