trials

Nancy Cartwright on the Limits of RCTs

Guest Post by Bill Gardner @Bill_Gardner

Many researchers and physicians assert that randomized clinical trials (RCTs) are the “gold standard” for evidence about what works in medicine. But many others have pointed to both strengths and limitations in RCTs (see, for example, Austin Frakt’s comments on Angus Deaton here). Nancy Cartwright is a major philosopher of science. In this Lancet paper she provides insights into why RCTs are so highly valued and also why they are by themselves insufficient to answer the most important questions in medicine.

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