REDCap Database Build for Clinical Trials: How We Do It for UAE CROs and Hospital Research Units

REDCap (Research Electronic Data Capture) is a web-based electronic data capture platform developed at Vanderbilt University and used by research institutions worldwide through the REDCap Consortium [1, 2]. It offers longitudinal projects, data validation, branching logic, user rights, data access groups, an audit log and exports to statistics packages [3].

None of that guarantees good clinical trial data management. The same software gives clean data in one study and months of queries in another. In REDCap database development, the difference is the specification, and whether the database was tested against it before go-live.

We read the protocol, case report forms, visit schedule, outcome measures and data management plan, then list every variable in a specification. REDCap accepts a data dictionary as a CSV file, so the specification becomes the build itself rather than a separate document that drifts out of date [3].

Each case report form becomes an instrument: screening and eligibility, demographics, baseline, follow-up visits, laboratory results, adverse events and study completion. In a longitudinal project the instruments are assigned to events so that, for example, the vital signs form appears at every visit while consent appears once [3].

We keep direct identifiers to the minimum the protocol needs and flag them as identifiers, so exports for analysis can be de-identified. For multi-site studies we set up data access groups, so each hospital sees only its own participants [3].

Data validation rules check formats and ranges at the point of entry: dates cannot fall before consent, and haemoglobin cannot be entered in the wrong unit. Branching logic shows a question only when it applies, such as adverse-event details only when an event is reported. Calculated fields handle scores and BMI so nobody does arithmetic by hand [3].

Automated checks reduce errors; they do not replace source-data verification or clinical review where the monitoring plan requires them.

Data-entry staff, investigators, monitors and data managers need different user access permissions. We map each role to rights for viewing, editing, exporting, locking records and changing the design, and we keep design rights with the data manager once the project is in production. ICH E6(R3) expects access to computerised systems to be controlled and attributable, with an audit trail of changes [4]. REDCap logs every change, but the sponsor still decides who may do what.

Database testing is recorded test case by test case, with failures fixed and retested. ICH E6(R3) asks for validation of computerised systems proportionate to their risk to participants and results, and FDA guidance sets out expectations for electronic records in clinical investigations for studies that fall under it [4, 5]. After go-live, design changes go through REDCap’s draft mode and our change log, so the database never silently departs from the approved forms.

Federal Law No. 2 of 2019 on the use of ICT in health fields governs health data in the UAE, and Federal Decree-Law No. 45 of 2021 is the general personal data protection law [6, 7]. Under Article 13 of the 2019 law, health data is generally to be stored and processed inside the country unless an exception applies; Ministerial Resolution No. 51 of 2021 sets out exceptions, including scientific research under conditions such as consent and encryption [8].

In practice this makes hosting the first decision in a UAE REDCap database build: an institutional REDCap instance on UAE servers is usually simpler than a cloud project abroad. Emirate-level health authorities and the ethics committee may add their own requirements, so we confirm hosting with the institution’s research governance and information security teams before any form is built. Using REDCap does not, by itself, make a study compliant.