Principles of CRF Design

A Case Report Form is a structured instrument used to collect study data. It may be a paper form, an electronic form in REDCap, or a hybrid of both. The purpose of a CRF is not to reproduce the full medical record. Its purpose is to capture protocol-required data in a clear, consistent, and analysis-ready manner. Good CRF design reduces errors, supports efficient data entry, improves user experience, and strengthens the credibility of the final dataset.