Trials that turn from retrospectively registered to prospectively registered: A cohort study of ‘retroactively prospective’ clinical trial registration using history data
Abstract:Background.Prospective clinical trial registration is a methodological best practice, a moral requirement under the Declaration of Helsinki, and in many cases legally required. The US clinical trials register ClinicalTrials.gov allows for changes to a clinical trial registry entry at any time, including changes to the clinical trial start date, making it possible for a trial that was registered after the enrolment of the first patient (retrospective registration) to retroactively change its start date to a lat… Show more
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