Table 4.

Interquartile Range of ECG Indexes at Discharge

Patient Population	Quartile, %	QT, ms	QTc, ms	PR, ms	QRS, ms	QTd, ms	Bazett QTcd, ms	Fridericia QTcd, ms	Relative QTd, ms
Total population	25	346	514	142	99	75	108	89	6.13
	50	389	578	167	109	105	138	110	7.87
	75	446	625	187	126	130	186	145	10.6
	99	771	813	288	231	226	254	236	18.28
Survivors	25	350	503	137	96	75	104	78	6.13
	50	382	550	147	107	88	123	95	7.98
	75	438	612	171	112	122	177	137	9.66
	99	501	685	208	186	191	226	202	18.28
Neurologically intact	25	359	503	136	99	74	105	76	5.84
	50	384	543	145	109	85	117	94	7.46
	75	439	596	175	114	122	172	137	9.00
	99	499	692	208	183	191	226	202	14.52
Residual neurologic disability	25	340	530	139	82	91	121	83	7.75
	50	363	595	154	89	107	164	129	10.14
	75	444	508	166	99	134	191	154	14.68
	99	502	666	195	107	159	196	154	18.28
Deceased	25	342	542	153	103	126	76	94	6.05
	50	417	586	180	116	150	109	128	7.87
	75	492	634	219	131	209	134	145	10.61
	99	771	816	288	231	321	226	237	14.47

Neurologically intact: CPC 1–2 at discharge. Residual neurologic disability: CPC 3–4 at discharge. CPC indicates Cerebral Performance Category; QTc, corrected QT interval; QTcd, corrected QT dispersion; and QTd, QT dispersion.