Table 2.

Continuous ECG characteristics for the study cohort^†.

	White				Black
	Male < 65 yr 2394	Male≥65 yr 2658	Female<65yr 3909	Female≥65yr 3408	Male < 65 yr 1592	Male≥65 yr 1168	Female<65yr 3361	Female≥65yr 2472
QRS duration	88.7(0.5)	96.2(0.6)	84.0(0.3)	87.1(0.5)	86.7(0.51)	91.1(0.7)	82.5(0.2)	86.4(0.4)
QTC	406.0(0.8)	414.7(0.8)	415.4(0.6)	418.3(0.8)	409.0(1.1)	413.4(1.00)	417(0.6)	418.5(0.7)
QTI	98.7(0.2)	101.0(0.2)	100.4(0.1)	101.3(0.2)	98.8(0.2)	100.2(0.2)	100.6(0.1)	101.1(0.2)
Heart Rate	64.2(0.4)	63.1(0.3)	67.0(0.3)	65.9(0.3)	68.1(0.5)	66.2(0.4)	69.7(0.3)	68.0(0.3)

^†Weighted mean (standard error)