Table I.

Intra-Observer and Inter-Observer Correlations for 5 ECG Parameters

Parameter	Correlation Coefficient, intra-observer	p-value	Correlation Coefficient, inter-observer	p-value
PR	0.985	<0.001	0.805	0.005
QRS	0.803	0.005	0.636	0.048
QT	0.902	<0.001	0.801	0.006
RR	0.993	<0.001	0.992	<0.001
QTc	0.901	<0.001	0.895	<0.001