Delayed hyper-enhancement cardiac magnetic resonance provides incremental prognostic value in patients with cardiac amyloidosis

Table 1 Cox proportional hazard analysis of various clinical and noninvasive imaging predictors of long-term mortality in patients with biopsy proven cardiac amyloidosis

	Univariate Analysis		Multivariate Analysis
Variable	χ²	p value	p value
Age	3.8	0.05	0.10
Gender	0.15	0.69
New York Heart Association Class	3.3	0.07	0.16
Low voltage on electrocardiogram	0.67	0.41
Left atrial size > 20 cm2	0.76	0.39
Left ventricular ejection fraction	2.21	0.14
Interventricular septal thickness	1.7	0.19
E/E' > 15 on Doppler echocardiography	1.12	0.29
Deceleration time on Doppler echocardiography ≤ 150 msec	1.41	0.23
Myocardial performance index	2.10	0.15
Diastology grade	0.35	0.55
Delayed hyperenhancement on cardiac magnetic resonance	4.91	0.03	0.02