What role does real-world evidence play in economic evaluations?

• A. It enhances external validity by providing data on effectiveness, costs, and resource use in routine practice.
• B. It replaces randomized trials entirely.
• C. It reduces variability in data.
• D. It lowers the cost of research.

Answer: (D)

Real-world evidence in economic evaluations is about using data from routine clinical practice to estimate how well an intervention works in everyday settings and what it actually costs, including the resources people use. This makes the evaluation more relevant to decision-makers because it reflects real adherence, patient diversity, and typical care pathways, not just the conditions of a controlled trial. By grounding effectiveness and costs in real practice, the results are more externally valid and useful for budgeting and policy decisions. While randomized trials are still important for establishing internal validity, real-world data complements them, especially for long-term outcomes and heterogeneous populations. It isn’t primarily about lowering research costs; its value lies in producing assessments that reflect what happens in the real world.