Designing a Multi-Site Clinical Study: A Practical Framework
Dr. Aisha Verma
May 14, 2026 · 7 min read
The hard part of a multi-site study is rarely the science. It is the coordination. Here is a framework that has held up across dozens of consortium studies.
The science is usually the easy part. What sinks most multi-site studies is the operational reality: every hospital has its own consent process, its own data conventions, and its own institutional politics. After years of running consortium studies, I've learned to design for that reality from day one.
Start with a single source of truth. Before a single patient is enrolled, agree on what counts as a 'visit', what fields are mandatory, and what the deletion / withdrawal policy looks like. If your platform supports it, encode those decisions as schema and access rules so they cannot drift between sites.
Second, separate ownership from access. Each site should own its own patient records, but the principal investigator should be able to see the de-identified aggregate. Platforms that conflate the two (giving everyone read access to everything) get blocked by IRBs every time.
Third, plan for the long tail. Studies do not end on the close-out date. They end years later, when someone asks for a follow-up dataset or a regulator audits the consent trail. Design your data layout so a future researcher can answer those questions without you in the room.
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