Table 1.

Cohort Split Based on Ejection Fraction

Class	Description	Num Videos	Percentage	Name
1	EF <50%	2,246	22.4%	Unhealthy
0	EF ≥50%	7,784	77.6%	Healthy

This is an imbalanced dataset, as 22% of echocardiograms are of the positive class. We attempted using undersampling and oversampling to mitigate the class imbalance problem.

EF = ejection fraction.