Analysis: Many clinical trials are too small

Cancer drug studies and other clinical trials often have too few participants or are not designed well enough to yield robust results, according to a study of the ClinicalTrials.gov database published in the Journal of the American Medical Association. Moreover, data included on the registry are often incomplete, missing even the trial's purpose in 7% of entries.

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Analysis Finds Clinical Trials Often Small, of Poor Quality - HealthDay News · Drug and device trials vary in size, quality: study - Reuters

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