Table 3.

Univariate and multivariate analysis between significant esophageal movement and several clinical factors

	Univariate analysis			Multivariate analysis
Variables	OR	95% CI	p	OR	95% CI	p
BMI, kg/m2	0.88	0.79 – 0.99	0.02	0.91	0.81 – 1.03	0.12
Male, sex	1.44	0.41 – 5.04	0.57
LA volume index, ml/m2	1.01	0.98 – 1.04	0.70
Age, years	1.04	0.98 – 1.10	0.16	1.01	0.95 – 1.08	0.75
Number of MRI	1.32	0.69 – 2.54	0.38
Mean time interval between
MRIs, days	1.06	0.74 – 5.04	0.68
Aorta area, cm2	1.51	0.73 – 3.12	0.26
Mean vertical size of eso, mm	1.02	0.73 – 1.43	0.90
Mean horizontal size of eso, mm	0.95	0.77 – 1.17	0.63
Minumum GAP ≤ 4.5mm	11.31	2.2 – 58.01	0.0006	9.25	1.72 – 49.67	0.0095

OR=odds ratio, CI=confidence interval, BMI=body mass index, LA=left atrium, MRI=magnetic resonance imaging, eso=esophagus, GAP=gap between the LA and the vertebral body