Detailed Explanation
The electronic case report form represents the digital implementation of the data collection instrument used to capture protocol-specified information about each trial participant. Unlike paper CRFs that are completed by hand and subsequently entered into databases through double data entry processes, eCRFs allow direct data entry into validated electronic systems, eliminating transcription steps and enabling immediate data validation. Each eCRF is specifically designed to capture the data elements required by the study protocol, organized into forms corresponding to study visits and procedures.