Table 5.

Likelihood Ratios for Combining the Results of B‐Type Natriuretic Peptide Levels with the Systolic Time Intervals EMAT (A) and EMAT/LVST (B).

A
BNP	EMAT ≥15	N	+HF, n	+HF, %	−HF, n	−HF, %	LR
<100	+	3	0	0	3	4.8	0
<100	−	32	0	0	32	50.8	0
100–500	+	4	3	17.6	1	1.6	11.0
100–500	−	27	4	23.5	23	36.5	0.6
>500	+	5	5	29.4	0	0	∞
>500	−	9	5	29.4	4	6.3	4.7
Total		80	17	100	63	100
B
BNP	EMAT/LVST ≥0.4	n	+HF, n	+HF, %	−HF, n	−HF, %	LR
<100	+	3	0	0	3	4.8	0
<100	−	32	0	0	32	50.8	0
100–500	+	4	4	23.5	0	0	∞
100–500	−	27	3	17.6	24	38.1	0.6
>500	+	6	6	35.3	0	0	∞
>500	−	8	4	23.5	4	6.3	3.7
Total		80	17	100	63	100

BNP = B‐type natriuretic peptide; EMAT = electromechanical activation time; HF = heart failure; LVST = left ventricular ejection time.

Under the Systolic Time Interval Test Column, a “+” Sign Denotes an Abnormally Elevated Test Result, While a “−” Sign Indicates a Normal Test Result