Table 4.

Laboratory and echocardiographic parameters stratified by RDW value.

	<16.4	>16.4	t-test
	Mean ± SD	Mean ± SD	t	P value
Age (month)	21.400 ± 18.616	11.250 ± 8.466	1.976	0.058
Hb (gm/dL)	9.573 ± 1.015	8.738 ± 1.209	2.077	0.047*
FS (%)	17.426 ± 9.957	32.050 ± 14.773	−3.209	0.003*
LVEDD (cm/s)	3.567 ± 1.262	2.869 ± 1.482	1.407	0.170
LVESD (cm/s)	2.920 ± 1.428	2.138 ± 1.556	1.456	0.156
E (cm/s)	0.647 ± 0.148	0.748 ± 0.200	−1.586	0.123
A (cm/s)	0.448 ± 0.125	0.789 ± 0.398	−3.166	0.004*
E/A	1.562 ± 0.527	1.109 ± 0.404	2.693	0.012*
$E/\acute{E}$	13.800 ± 3.680	10.969 ± 4.940	1.800	0.082

 *Significant.

Hb: hemoglobin; RDW: red cell distribution width; FS: fraction shortening; LVEDD: left ventricular end diastolic dimension; LVESD: left ventricular end systolic dimension; E: peak velocity of early diastolic filling; A: peak velocity of late filling; $E/\acute{E}$: early mitral inflow velocity to early diastolic mitral annular velocity ratio.