Table 4.

Stepwise Multiple Regression Analysis between QT_endVI, or QT_peakVI, or T_peakT_end (Dependent Variables) and other Clinical and Spectral Data (Independent Variables)

	Ln LFRR			LVEF			BMI
	β	SE	P	β	SE	P	β	SE	P	R2	P
QTendVI	−0.37	0.04	0.0001	−0.33	0.00	0.001	−0.26	0.02	0.008	0.366	0.0001
QTpeakVI	−0.59	0.04	0.0001	−0.28	0.00	0.0001	–	–	NS	0.492	0.0001
TpeakTendVI	−0.42	0.07	0.0001	−0.26	0.01	0.014	–	–	NS	0.284	0.0001

R² value (a goodness‐of‐fit index) with its related P value refers to the fraction of variance explained by each multivariate model (last two columns).

β = standardized regression coefficient value; SE = standard error value.