TABLE 3.

Variables independently related to left atrial systolic force in the study population (n=500): Multivariate linear regression model

Variable	Standardized beta coefficients	P	Collinearity statistics (tolerance/VIF)
Dilated cardiomyopathy (n=94)	0.45	<0.001	0.80/1.41
Aortic stenosis (n=85)	0.32	<0.001	0 88/1.13
Age, years	0.26	<0.001	0 83/1.21
Left ventricular mass, g/m2	0.17	<0.001	0.80/1.40
Hypertrophic cardiomyopathy (n=40)	0.14	<0.001	0.83/1.20
Heart rate, beats/min	0.14	<0.001	0.97/1.03
Stroke volume, mL	0.12	0.002	0.93/1.08
Final results for multivariate regression model (SEE 6.8, R2=0.44)	0.66	<0.001

SEE Standard error of estimation; VIF Variance inflation factor