To determine the best combination of parameters that would improve the diagnostic performance of exercise testing, coronary angiography plus exercise testing were done on 112 patients with angina pectoris and normal electrocardiogram. The univariate predictors of coronary artery disease included age ≥ 40 years, male sex, hypertension, smoking, development of exertional chest pain, decrease in systolic blood pressure (BP) ≥ 10 mmHg or systolic BP 3 min post-exercise > 90% of peak, heart rate drop < 12 beats/min 1 min post-exercise, exercise-induced ST-segment depression ≥ 1 mm. Multivariate logistic regression analysis showed that using either ST depression.