TABLE 2.

Comparing the Predictive Performance of Different Inputs and Models.

	1-year mortality (AUC)		5-year mortality (AUC)
FRS	0.58		0.61
Inputs	Linear	Non-linear	Linear	Non-linear
(Number of variables)
Clinical only	0.791	0.820**	0.827	0.843**
(100)	[0.787,0.792]	[0.82,0.83]	[0.825,0.829]	[0.84,0.845]
Clinical + LVEF	0.800	0.831**	0.831	0.858**
(101)	[0.797,0.802]	[0.828,0.833]	[0.829,0.833]	[0.856,0.860]
Clinical +LVEF + Echo	0.824	0.848**	0.864	0.893**
(158)	[0.822,0.826]	[0.846,0.850]	[0.862, 0.866]	[0.892,0.895]

Values in [] denote 95% confidence intervals across 10 cross-validation folds.

^**(p<0.01), Wilcoxon signed-rank test significance compared to baseline linear model. AUC = area under the curve, Echo = echocardiographic measurements, FRS = Framingham risk score, LVEF = left ventricular ejection fraction