How to request a test: A clinician’s guide to the interpretation and evaluation of medical tests Tom Boyles

How to request a test: A clinician’s guide to the interpretation and evaluation of medical tests – Ebook Instant Download/Delivery ISBN(s): 9780192866615,0192866613

Product details:

• ISBN-10 ‏ : ‎ 0192866613
• ISBN-13 ‏ : ‎ 978-0192866615
• Author(s): Tom Boyles

Medical tests consume considerable resources and yet making requests is often left to the most junior members of the team. Medical schools often under prepare junior doctors for these tasks so they tend to request large numbers of tests to make sure ‘all bases are covered’ by the time a more senior colleague attends to the patient.

Beginning with naïve questions such as ‘what is a medical test?’ and ‘why do we perform tests?’, the book also covers the evaluation of tests from a public health perspective and helps the readers to determine whether a test should be introduced into clinical care. By describing the basics of medical decision making based on probability thresholds, students will learn how to avoid unnecessary testing when results are unlikely to influence patient relevant decisions, and the pros and cons of using metrics such as sensitivity, specificity, and predictive values.

Illustrated throughout with real life examples from multiple medical and surgical specialties, it concludes with a novel checklist for doctors to consider every time they think of requesting a test.

Table contents:

1.. Introduction

2. Determining the accuracy of a test

3.Test accuracy, sensitivity and specificity

4.. Test accuracy as positive and negative predictive values

5.. Test accuracy as likelihood ratios

6.. Decision thresholds

7.. Frameworks for evaluating medical tests

8.. Diagnostic and prognostic research

9.. Impact studies

10.. Evaluation of novel a test

11.. Conclusions

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