Table 3.

Use of Magnetocardiography in Diagnosis of Coronary Artery Disease

35‐year‐old man with nonanginal chest pain

Pretest probability of CAD = 0.05 (low; no stress test necessary)

Pretest odds of CAD = Pretest probability /(1 – pretest probability) = 0.05 /(1 – 0.05) = 0.05

Posttest odds of CAD = Pretest odds × likelihood ratio of MCG = 0.05 × 3.92 = 0.20

Posttest probability of CAD = posttest odds /(1 + posttest odds) = 0.20 /(1+ 0.20) = 0.17 (intermediate; stress testing indicated)

45‐year‐old woman with typical anginal chest pain

Pretest probability of CAD = 0.55 (intermediate, stress testing indicated)

Pretest odds of CAD = pretest probability /(1 – pretest probability) = 0.55 /(1 – 0.55) = 1.22

Posttest odds of CAD = pretest odds × likelihood ratio of MCG = 1.22 × 3.92 = 4.78

Posttest probability of CAD = posttest odds /(1 + posttest odds) = 4.78 /(1 + 4.78) = 0.83 (high; medical therapy pending coronary angiogram is indicated)

CAD = coronary artery disease; MCG = magnetocardiography.