GRADE for Diagnostic Tests and Strategies
This method helps assess how confident we can be in the results of diagnostic tests and the effects of using those tests to guide treatment. It looks at how well a test identifies a condition and whether using it leads to better patient outcomes.
At a glance
Use when
Evaluating diagnostic tests or test-guided treatment strategies where evidence spans from test accuracy to clinical outcomes
Avoid when
Direct evidence on patient outcomes from diagnostic interventions is abundant and straightforward
Inputs
Evidence on diagnostic accuracy, patient outcomes, and test-treatment pathways
Outputs
Graded assessment of certainty in evidence and strength of recommendations for diagnostic strategies
How it works
An extension of the GRADE framework for diagnostic accuracy and test-treatment strategies, this method evaluates the certainty of evidence and strength of recommendations by considering the indirect pathway from test accuracy to patient-important outcomes. It addresses unique challenges such as variability in test interpretation, downstream consequences of testing, and linkage between diagnostic performance and clinical utility.
- HTA domains
- Clinical Effectiveness, Patient and Social Aspects
- Categories
- Appraisal
- Assumptions
- Test accuracy is linked to patient outcomes through a plausible chain of evidence; indirect evidence can be systematically evaluated
- Strengths
- Systematically addresses uncertainty in diagnostic pathways; integrates patient outcomes; transparent and structured approach
- Limitations
- Complex to apply when evidence chains are weak or missing; requires expert judgment in linking test performance to outcomes
- Also known as
- GRADE for diagnostics, Diagnostic GRADE, GRADE for test-treatment strategies
Questions this answers
- › How certain is the evidence about a diagnostic test's accuracy?
- › What is the strength of a recommendation to use a diagnostic test?
- › How does test accuracy translate into patient outcomes?
- › What are the risks and benefits of a test-treatment strategy?
- › How should indirect evidence be evaluated in diagnostic pathways?
- › What factors reduce or increase confidence in diagnostic recommendations?
References & sources
Similar by meaning
Beta record. Based on the original catalogue summary; primary-source enrichment pending.