Comparative effectiveness research: what is it and why do we need it in nephrology?

Area of Science:

• Health Services Research
• Clinical Epidemiology
• Nephrology Research

Background:

• The U.S. faces high healthcare spending with suboptimal health outcomes compared to other industrialized nations.
• Comparative Effectiveness Research (CER) is gaining traction to identify optimal healthcare practices and improve system efficiency.
• CER involves comparing alternative tests, therapies, or procedures in real-world settings to inform decision-making.

Discussion:

• This review examines the strengths and limitations of various study designs used in CER, including randomized clinical trials, observational studies, and systematic reviews.
• Specific examples from nephrology literature illustrate the application and challenges of CER methodologies.
• Methods to mitigate confounding in observational CER studies are discussed to enhance evidence quality.

Key Insights:

• CER is crucial for evidence-based decision-making by clinicians, patients, and policymakers.
• Understanding different study types and their limitations is essential for conducting robust CER.
• Addressing confounding is critical for the validity of observational CER findings.

Outlook:

• Prioritizing CER in kidney disease care is vital to transition the specialty from opinion-based to evidence-based practice.
• Continued development and application of CER methodologies will improve patient outcomes and healthcare efficiency.
• Future research should focus on real-world evidence generation to guide clinical practice and health policy in nephrology.