Table 4:

Receiver Operator Curve Characteristics and Cut-Off Points of Strain Parameters for Diagnosis of ATTR-CM

	SAB	RELAS	EFSR
Cut point	>2.1	>1	>4.1
Sensitivity (%)	74.2	7.3	83.2
Specificity (%)	63.7	99.1	43.4
Correctly Classified (%)	69.8	45.3	66.7
Positive LR	2.04	7.7	1.5
Negative LR	0.41	0.94	0.39
AUC	0.69	0.53	0.63
Standard Error	0.02	0.01	0.02
95% CI	0.65–0.73	0.52–0.55	0.59–0.67

AUC, area under the curve; CI, confidence interval; EFSR, ejection fraction strain ratio; LR, likelihood ratio; RELAS, relative apical sparing ratio; SAB, septal apical to base longitudinal strain ratio.