The Egyptian Heart Journal

Table 2 Electrocardiography parameters of the study population

From: Electrocardiographic substrates of arrhythmias in patients with end-stage and chronic kidney diseases: a case–control study

	ESRD (n = 75) Mean ± SD	CKD (n = 75) Mean ± SD	Control (n = 40) Mean ± SD	p value
QTc max	484.59 ± 42.81	479.67 ± 41.11	452.93 ± 41.75	0.001
QTc min	397.19 ± 43.59	402.80 ± 46.84	393.68 ± 41.64	0.549
QTc average	441.90 ± 39.28	442.40 ± 40.01	424.44 ± 39.02	0.038
QTc dispersion	88.17 ± 31.89	76.93 ± 30.99	59.25 ± 22.15	< 0.001
P-WD	47.97 ± 17.68	46.32 ± 22.30	34.70 ± 13.36	0.001
Tp-e/QTc	0.64 ± 0.30	0.68 ± 0.28	0.47 ± 0.24	0.002

Max, maximum; Min, minimum; P-WD, P wave dispersion; QTc, Corrected QT interval; Tp-e, T wave peak to end interval

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