Table 2:

Population metrics of the study population by Right Ventricular Systolic Dysfunction or Right Ventricular Dilation category

	RVSD or RVD	Normal	p
Internal Testing Cohort
Patients	30,780	104436
Echo-ECG pairs	278877	425815
Age	65.8 (65.8 – 65.9)	66.7 (66.7 – 66.8)	<0.0001
Gender n (%)			<0.0001
Male	18,533 (60.21%)	51122 (48.95)
Female	12,247 (39.79%)	53314 (51.05)
Race n (%)			<0.0001
American Indian	384 (1.25%)	962 (0.92%)
Asian	708 (2.3%)	2414 (2.31%)
Black	3,258 (10.58%)	8621 (8.25%)
Hispanic	2,478 (8.05%)	6569 (6.29%)
Other	2,513 (8.16%)	12715 (12.17%)
Pacific Islander	43 (0.14%)	117 (0.11%)
Unknown	12,300 (39.96%)	44079 (42.21%)
White	9,096 (29.55%)	28959 (27.73%)
Ventricular Rate	82.4 (82.2 – 82.6)	77.8 (77.7 – 77.9)	<0.0001
Atrial Rate	99.1 (98.4 – 99.8)	84.5 (84.2 – 84.8)	<0.0001
PR Interval	170.1 (169.7 – 170.5)	163.8 (163.6 – 164.0)	<0.0001
QTc Interval	464.1 (463.6 – 464.7)	446.2 (445.9 – 446.4)	<0.0001
External Validation Cohort
Patients	1,783	11,649
Echo-ECG pairs	8,828	47,990
Age	67.2 (66.9 – 67.5)	67.3 (67.1 – 67.4)	0.06
Gender n (%)			<0.0001
Male	1,067 (59.84%)	5,881 (50.49%)
Female	716 (40.16%)	5,768 (49.51%)
Race n (%)			<0.0001
American Indian	-	-
Asian	-	35 (0.3%)
Black	289 (16.21%)	1629 (13.98%)
Hispanic	33 (1.85%)	159 (1.36%)
Other	502 (28.15%)	3775 (32.41%)
Pacific Islander	-	-
Unknown	587 (32.92%)	3483 (29.9%)
White	368 (20.64%)	2564 (22.01%)
Ventricular Rate	86.0 (85.0 – 86.9)	79.9 (79.6 – 80.3)	<0.0001
Atrial Rate	104.5 (101.5 – 107.5)	86.4 (85.6 – 87.2)	<0.0001
PR Interval	171.8 (170.0 – 173.6)	166.9 (164.7 – 169.2)	<0.0001
QTc Interval	473.6 (471.5 – 475.8)	451.9 (451.2 – 452.6)	<0.0001