Table 4.

Multivariate logistic regression analysis predicting LVEF < 40% in the derivation cohort and point assignment based on the regression coefficient.

ECG variables	Beta coefficient	P-value	OR (95% CI)	Point assigned
Q wave ≥ 2 contiguous leads	−0.113	0.770	0.893 (0.419–1.905)
Atrial fibrillation	0.072	0.916	1.074 (0.283–4.074)
STD ≥ 1 mm in ≥ 2 contiguous leads	0.802	0.014	2.230 (1.175–4.234)	1
PRWP	1.714	<0.001	5.550 (2.671–11.531)	2
HR > 100 bpm	1.394	<0.001	4.030 (1.970–8.245)	1.5
QRS duration > 110 ms	1.415	0.001	4.115 (1.814–9.332)	2
LAE	0.050	0.939	1.051 (0.291–3.799)

Abbreviations as in Table 3.