A hierarchical outcomes approach to test assessment

Area of Science:

• Medical Technology Assessment
• Clinical Diagnostics
• Health Services Research

Background:

• Evaluating diagnostic technologies requires a comprehensive framework.
• Existing assessments may not capture the full spectrum of a test's value.
• Systematic reviews of diagnostic tests need standardized methods for endpoint classification.

Purpose of the Study:

• To introduce a hierarchical classification system for clinical endpoints in diagnostic technology assessment.
• To provide a structured approach for evaluating the multifaceted value of diagnostic tests.
• To offer a template for systematic reviews and guide future research in diagnostic test performance.

Main Methods:

• Development of a 6-category hierarchical classification system for investigative outcomes.
• Classification includes technical efficacy, diagnostic accuracy efficacy, diagnostic thinking efficacy, therapeutic efficacy, clinical outcome efficacy, and societal efficacy.
• Application of the model using examples from medical literature, particularly in emergency medicine.

Main Results:

• The hierarchical model allows for progressive evaluation of diagnostic test value.
• Each successive level provides a broader understanding of the test's impact.
• The system highlights areas of diagnostic test performance that warrant further investigation.

Conclusions:

• The proposed classification system offers a structured method for assessing diagnostic technologies.
• It enhances the interpretation of diagnostic test performance in the medical literature.
• The system is valuable for systematic reviews and clinical decision-making, especially in fields like emergency medicine.