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Stress Test Inpatients Positive stress test Cardiac catheterization (Gold standard for flow-limiting CAD) Yes No 102 (84%) 20 (16%) Total 122 Outpatients Yes No Total Positive stress test 67 (58%) 48 (42%) 115 Which of the following best explains the difference in the diagnosis rate of flow-limiting CAD between the groups in this study inpatients and outpatients)? Blinding of the catheterization film readers Negative likelihood ratio of the test Prevalence of the disease in the patient groups Positive likelihood ratio of the test Sensitivity of the test
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