A Double Master's Two-Step Test: Clinical, Angiographic and Hemodynamic Correlations

160 men with known or suspected coronary artery disease (majority with a history of angina or myocardial infarction, or both), mean age 41.6 years. 90 subjects had no cardiac symptoms during the 3 months preceding study; the others had chest pain.

Double Master's two-step test

Selective coronary angiograms (reference standard); 87 subjects also had hemodynamic studies involving cardiac catheterization

Diagnostic accuracy (false positive and false negative rates) of the double Master's two-step test compared to coronary angiographysurrogate