Association between Severity of Diabetic Retinopathy and Cardiac Function in Patients with Type 2 Diabetes

Table 3

Comparison of electrocardiogram indices in T2DM patients stratified by retinopathy status.

Indices	Total ()	NDR ()	NPDR ()	PDR ()
Heart rate (bpm)					<0.001
QRS (ms)					0.372
PR interval (ms)		157.62 ± 20.09			<0.001
QT interval (ms)					0.087
QTc interval (ms)					<0.001
PR  ms, (%)	40 (5.1)	12 (2.5)	24 (9.7)	4 (5.9)	<0.001
QTc  ms, (%)	115 (14.6)	37 (7.8)	64 (25.9)	14 (20.6)	<0.001

Note: data are expressed as or (%). Bold indicated value of . vs. NDR group.