Table 2.

Multivariable Linear Regression Models to Assess Future TAA Growth Rate [log(TAA growth+1)]

Model	Chronological age alone (Model's adjusted R 2=0.268)			Arterial age alone (Model's adjusted R 2=0.343)			Chronological age+arterial age (Model's adjusted R 2=0.354)
Variable	β±SE	β*	P value	β±SE	β*	P value	β±SE	β*	P value
Chronological age, 1 y	0.0007±0.002	0.033	0.763	…	…	…	−0.004±0.003	−0.206	0.083
Arterial age, 1 y	…	…	…	0.003±0.0009	0.333	0.0003	0.004±0.001	0.420	<0.0001
Male sex (vs female sex)	−0.043±0.024	−0.163	0.080	−0.043±0.023	−0.165	0.063	−0.041±0.023	−0.156	0.076
BSA, 1 m2	−0.005±0.103	−0.005	0.958	−0.010±0.092	−0.009	0.918	−0.068±0.098	−0.064	0.487
dTAA (vs hTAA)	0.029±0.025	0.118	0.249	0.002±0.022	0.009	0.926	0.015±0.023	0.056	0.474
Baseline TAA size, 1 mm	0.010±0.005	0.165	0.053	0.005±0.005	0.263	0.091	0.007±0.005	0.108	0.184
Time between studies, 1 y	−0.022±0.010	0.025	−0.178	−0.027±0.009	−0.217	0.004	−0.027±0.009	−0.214	0.005
Ascending aneurysm location (vs root location)	−0.376±0.075	−1.334	<0.0001	−0.367±0.070	−1.302	<0.0001	−0.349±0.070	−1.239	<0.0001
Descending aneurysm location (vs root location)	0.752±0.147	1.371	<0.0001	0.736±0.139	1.342	<0.0001	0.730±0.138	1.332	<0.0001
Concordant imaging modalities (vs discordant)	−0.005±0.019	−0.019	0.800	−0.013±0.018	−0.052	0.471	−0.016±0.018	−0.064	0.374
Hypertension	−0.005±0.022	−0.022	0.804	−0.020±0.021	−0.083	0.337	−0.022±0.021	−0.091	0.292
Diabetes	0.032±0.052	0.049	0.543	0.011±0.049	0.017	0.826	0.008±0.049	0.012	0.877
Ever smoking	−0.007±0.019	−0.028	0.723	−0.0003±0.018	−0.012	0.871	0.003±0.018	0.014	0.857
Hyperlipidemia	0.025±0.021	−0.101	0.242	0.016±0.019	0.066	0.407	0.024±0.020	0.100	0.224
MAP, 1 mm Hg	0.0002±0.002	0.009	0.913	0.0008±0.002	0.033	0.667	0.001±0.002	0.056	0.474

BSA indicates body surface area; dTAA, degenerative thoracic aortic aneurysm; hTAA, hereditary thoracic aortic aneurysm; MAP, mean arterial pressure; and TAA, thoracic aortic aneurysm.