Clinical Trial Duration

Clinical trial duration was defined as the interval from first patient in to last patient last visit. In ClinicalTrials.gov terms, CTD was measured from study start date to study completion date. The primary completion period captured the time needed to assess primary efficacy outcomes and was used in sensitivity analysis. DCT adoption and its interaction with clinical phase were not significantly associated with shorter CTD. Clinical phase was significantly associated with CTD. The correction notice does not disclose findings or conclusions about trial duration. The original study investigated whether decentralised clinical trial adoption is associated with differences in overall trial duration. The original study addressed whether structural advantages of decentralised trials translate into shorter or longer calendar-time trial durations.