Abstracts of clinical study protocols should include which element?

• A. Summary and purpose of the study
• B. Sponsor's annual budget
• C. Investigator's medical license number
• D. Study's final results

Answer: (A)

Abstracts of clinical study protocols are meant to give a concise snapshot of what the study intends to do. The essential element is a clear summary and the purpose of the study: what question is being asked, why it matters, and the overall approach planned to answer it. This lets regulators, ethics committees, and researchers quickly grasp the aims and design without wading through details. Financial or administrative details, like the sponsor’s annual budget, belong in budget or grant documents, not in the protocol abstract. Personal identifiers such as an investigator’s medical license number aren’t relevant to the study’s design and are kept separate for privacy and administrative reasons. Final results come after the study is completed, so they belong in the study report or publication, not in the protocol abstract. While abstracts may touch on design, population, interventions, and endpoints, the defining element for this context is the summary and purpose that state what the study aims to discover and how.