ARTHUR M. MASTER, M.D.
To the editor: In their recent ANNALS paper (74:509-517, 1971) on correlations with the two-step test, Fitz-Gibbon and associates stated, "The double Master's two-step test yields an unacceptable number of "false positive" results. . . . The prevalence of "false negative" results indicates that reliance on the test in excluding the presence of even grave coronary artery disease is unwarranted."
The authors depend almost wholly on their angiographic findings. Yet coronary angiography is far from foolproof. Scores of papers make this point. A large number of studies have shown that angiography fails to demonstrate coronary disease in about 15% of
MASTER AM. Master's Two-Step Test. Ann Intern Med. 1971;75:804–805. doi: 10.7326/0003-4819-75-5-804
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Published: Ann Intern Med. 1971;75(5):804-805.
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