Table 1.

Variable definitions for the 14-variable and 27-variables and what percentage of each variable was missing in the positive (+) versus the non-positive (−) MRI group.

Variables in 14 Variable Set	Definition	Percentage Missing (+)	Percentage Missing (−)
BSA	Body Surface Area	3.2%	8.8%
EDV index	End diastolic volume index	38.7%	38.6%
ESV index	End systolic volume index	38.7%	38.6%
SV index	Stroke volume index	38.7%	38.6%
FS	Fractional shortening	3.2%	5.3%
EF	Ejection fraction	32.3%	35.1%
Ao V2 max	Aortic V2 max	3.2%	1.8%
Ao max PG	Aortic max pressure gradient	3.2%	1.8%
MV E/A	Mitral valve E/A ratio	16.1%	1.7%
IVSd z-score	Interventricular septum thickness measured in diastole, z-score	3.2%	10.5%
LVIDd z-score	Left ventricular internal dimension measured in diastole, z-score	3.2%	10.5%
LVIDs z-score	Left ventricular internal dimension measured in systole, z-score	3.2%	12.3%
LVPWd z-score	Left ventricular posterior wall thickness measured in diastole, z-score	3.2%	10.5%
LV mass z-score	Left ventricular mass measured in diastole, z-score	3.2%	10.5%
Additional Variables in 27 Variable Set	Definition	Percentage Missing (+)	Percentage Missing (−)
Age	Age at scan	0%	0%
Height	Height at scan	3.2%	8.8%
Weight	Weight at scan	0%	1.8%
Ao root diam	Aortic root diameter	35.5%	22.8%
MV A max	Mitral valve A wave max (max atrial filling velocity)	35.5%	24.6%
MV E max	Mitral valve E wave max (max early filling velocity)	38.7%	22.8%
PA V2 max	Pulmonary artery V2 max	12.9%	3.5%
PA max PG	Pulmonary artery max pressure gradient	12.9%	3.5%
TR max PG	Tricuspid regurgitation max pressure gradient	35.5%	50.9%
TR max vel	Tricuspid regurgitation max velocity	38.7%	52.6%
TV A max	Tricuspid valve A wave max (max atrial filling velocity)	25.8%	14.0%
TV E max	Tricuspid valve E wave max (max early filling velocity)	19.4%	7.0%
TV E/A	Tricuspid valve E/A ratio	64.5%	64.9%