. 2021 Feb 26;35(2):812–822. doi: 10.1111/jvim.16067

TABLE 6.

Multiple linear regression of age and ECV on selected echocardiographic variables in 12 cats with hypertrophic cardiomyopathy (HCM)

Dependent variable	Independent variables	ß	P
DTE	ECV	2.27	.005
DTE	Age	−0.075	.11
A	ECV	0.035	.007
A	Age	0.000019	.98
E : A	ECV	−0.031	.005
E : A	Age	−0.00058	.44
SrCE	ECV	−0.39	.0004
SrCE	Age	−0.0022	.65
SrRE	ECV	0.48	.0009
SrRE	Age	0.0055	.44
E/SrCE	ECV	1.41	.002
E/SrCE	Age	−0.029	.09
E/SrRE	ECV	−0.71	.01
E/SrRE	Age	0.012	.26
LA FS	ECV	−0.29	.04
LA FS	Age	−0.00012	.98

Abbreviations: A, peak velocity of late diastolic transmitral flow; DTE, deceleration time of early diastolic transmitral flow; E, peak velocity of early diastolic transmitral flow; E : A, ratio between E and A; ECV, extracellular volme fraction; E/SrCE, ratio between E and SrCE; E/SrRE, ratio between E and SrRE; LA FS, left atrial fractional shortening; SrCE, peak circumferential strain rate during early diastole; SrRE, peak radial strain rate during early diastole.