Data set of primary outcome changes in interventional clinical trials registered on ClinicalTrials.org

All clinical studies classified as ‘interventional studies’ registered with ClinicalTrials as of 25 October 2012 are shown. The following information was collected from each study: study registration date; the study start date; the primary completion date; study completion date; original primary outcome and date submitted; current primary outcome and date submitted; study phase, data monitoring committee; study sponsor and collaborators.

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