Registration Consistency

EUCTR recorded earlier completion dates more often than later completion dates in completed pairs. Only half of completed confirmed cross-registrations with dates in both registries agreed within the same year and month. Most confirmed cross-registrations with recruitment status in both records had the same mapped recruitment status. Completion date discrepancies ranged from 1 to 110 months among discrepant cases. Different completion dates can produce inconsistent verdicts on whether results reporting is overdue.