Table 7.

Multivariable binary logistic regression analysis for prediction of insignificant CAD.

					95% CI for Exp (B)
Variable retained in the model	B	SE	Sig.	Exp (B)	Lower	Upper
Age < 55 yr	0.91	0.53	0.083	2.49	0.89	6.98
Female gender	1.85	0.56	0.001	6.39	2.15	18.99
Non-white race	1.00	0.48	0.039	2.71	1.05	6.98
Non-smoker	1.51	0.52	0.004	4.52	1.62	12.64
No hypertension	−1.58	0.58	0.006	0.21	0.07	0.64
No dyslipidemia	−1.16	0.57	0.041	0.31	0.10	0.96
No family history of CAD	−2.35	0.80	0.003	0.10	0.02	0.46
A typical chest pain	2.04	0.68	0.003	7.68	2.01	29.39
Lower CK-MB	3.17	0.62	<0.001	23.77	7.12	79.36
Constant	−2.58	1.17	0.027	0.08
Model diagnostics
Hosmer & Lemeshow test	p-value, 0.938
Accuracy	86%
Area under the ROC curve (AUC)	0.939 (95% CI, 0.908–0.970; p-value, <0.0001)
Youden index J	0.74
Associated criterion (probability)	>0.66
Sensitivity	82%
Specificity	92%