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III. How to Use an Article About a Diagnostic Test B. What Are the Results and Will They Help Me in Caring for My Patients?

Roman Jaeschke, MD, MSc; Gordon H. Guyatt, MD, MSc; David L. Sackett, MD, MSc; the Evidence-Based Medicine Working Group; Gordon Guyatt, MD, MSc; Eric Bass, MD, MPH; Patrick Brill-Edwards, MD; George Browman, MD, MSc; Deborah Cook, MD, MSc; Michael Farkouh, MD; Hertzel Gerstein, MD, MSc; Brian Haynes, MD, MSc, PhD; Robert Hayward, MD, MPH; Anne Holbrook, MD, PharmD, MSc; Roman Jaeschke, MD, MSc; Elizabeth Juniper, MCSP, MSc; Hui Lee, MD, MSc; Mitchell Levine, MD, MSc; Virginia Moyer, MD, MPH; Jim Nishikawa, MD; Andrew Oxman, MD, MSc, FACPM; Ameen Patel, MD; John Philbrick, MD; W. Scott Richardson, MD; Stephane Sauve, MD, MSc; David Sackett, MD, MSc; Jack Sinclair, MD; K.S. Trout, FRCE; Peter Tugwell, MD, MSc; Sean Tunis, MD, MSc; Stephen Walter, PhD; Mark Wilson, MD, MPH.

JAMA. 1994;271(9):703-707.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

CLINICAL SCENARIO

You are back where we put you in the previous article¹ on diagnostic tests in this series on how to use the medical literature: in the library studying an article that will guide you in interpreting ventilation-perfusion (V/Q) lung scans. Using the criteria in Table 1, you have decided that the Prospective Investigation of Pulmonary Diagnosis (PIOPED) study² will provide you with valid information. Just then, another physician comes looking for an article to help with the interpretation of V/Q scanning. Her patient is a 28-year-old man whose acute onset of shortness of breath and vague chest pain began shortly after completing a 10-hour auto trip. He experienced several episodes of similar discomfort in the past, but none this severe, and is very apprehensive about his symptoms. After a normal physical examination, electrocardiogram and chest radiograph, and blood gas measurements that show a Pco₂ of . . . [Full Text PDF of this Article]

Author Affiliations
From the Departments of Medicine and Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario.

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