Table 3. Correlation between Cobb angles and echocardiographic parameters in groups A and B.

Variable	Pearson correlation factor
	Group A	Group B
Velocity on main PA (cm/sec)	-0.194	0.655
EF (%)	0.239	0.183
Mitral valve E/A ratio	-0.336*	0.824*
Tissue Doppler (E'/A')	-0.375*	0.344
Tissue Doppler (E/E')	0.060	-0.149

Group A, the apex of the scoliosis-affected spine was positioned above the diaphragm; group B, the apex of the spine was below the level of the diaphragm; PA, pulmonary artery; EF, ejection fraction.

^*P<0.05.