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EBP Approach to Questions of Diagnostic Test Accuracy

Course: #1103Level: Intermediate 2 Hours

In this course the presenter will review principles of evidence-based practice relevant to accuracy and use of clinical diagnostic tests. Course participants will learn a structured approach to forming an answerable clinical question, finding & selecting best available evidence related to the question, determining the validity, strength, & relevance of that evidence, and integrating the evidence with clinical expertise and with patient values & expectations. Critical appraisal evidence of diagnostic test accuracy will be addressed in detail, with emphasis on answering the questions: 1) Are the results valid? 2) What are the results? 3) How can I apply the results to patient care?

Preview Exam
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Learning Outcomes

  • checkmarkIdentify the appropriate structure for a 3-part foreground question related to diagnostic test accuracy and perform an efficient online search for evidence for diagnostic test accuracy using PubMed Clinical Queries.
  • checkmarkIdentify key validity threats in published evidence for diagnostic test accuracy. Explain the concept of probabilities and limiting uncertainty when using diagnostic tests.
  • checkmarkUse an EBP calculator to compute sensitivity, specificity, positive and negative likelihood ratios, and 95% confidence intervals for each, given numbers of patients with true positives, false positives, true negatives, and false negatives.
  • checkmarkApply SpPin and SnNout principles to make clinically relevant interpretations of quantitative results from evidence for diagnostic test accuracy. Use a likelihood ratio nomogram to determine a post-test probability given a pre-test probability (or prevalence), values for positive and negative likelihood ratios, and either a positive or negative test result for a given patient.
  • checkmarkIdentify the level of evidence for a study of diagnostic test accuracy using the Oxford taxonomy for levels of evidence and a description of that study.

Agenda

0-5 Minutes The diagnostic process
5-10 Minutes Foreground questions and searching for evidence
10-35 Minutes Validity issues with studies of diagnostic test accuracy
35-45 Minutes The classic 2x2 contingency table
45-55 Minutes Sensitivity & specificity; SpPins & SnNouts
55-70 Minutes Likelihood ratios & the LR nomogram
70-80 Minutes Confidence intervals for indices of diagnostic test accuracy. ROC curves & cut scores
80-90 Minutes An illustration of multiple tests given in sequence
90-105 Minutes Clinical prediction rules: clusters of diagnostic tests
105-120 Minutes Application: Homan’s sign & the Wells rule. Q & A

Course participation information

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Full attendance is required, and the times you log in and out will be recorded and documented. If you log in to a live webinar late or if you log out early, you may not be able to earn CEU.

Passing an online exam and completing a course evaluation will be required to earn continuing education credit.

Live Webinars allow presenter and participant interaction. The exam and course evaluation for these courses must be completed within 7 days of the event.

On-demand courses include texts, video and audio recordings of live webinars, and multimedia formats. The exam and course evaluation for on-demand courses must be completed within 30 days of course registration.

To participate in the course, complete the exam and course evaluation, and earn continuing education credit, you must be a PhysicalTherapy.com member. Participants must complete the entire course; partial credit is not allowed.

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California

PhysicalTherapy.com is a recognized continuing competency approval agency for the Physical Therapy Board of California. This course is offered for 2.0 hours of continuing competency.


IL Physical Therapy Continuing Education Sponsor

PhysicalTherapy.com is approved by the Illinois Department of Professional Regulation as a sponsor of continuing education for PTs/PTAs (Sponsor License #216000252). This course is offered for 2.0 hours (Intermediate level).


KPTA

This course is offered for 2 hours (Intermediate level, Category 2) by the Kentucky Physical Therapy Association (Provider #CS80-2024-APTAKY).


New York

PhysicalTherapy.com is recognized by the New York State Education Department's State Board for Physical Therapy as an approved provider of physical therapy and physical therapist assistant continuing education.



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