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Home » Clearing up the confusion: SDV v. SDR

Clearing up the confusion: SDV v. SDR

January 1, 2015
CenterWatch Staff

In its initial position paper and risk-based monitoring (RBM) update, TransCelerate introduced an important distinction between source data verification (SDV) and source data review (SDR).

SDR, according to the con­sortium, “is not a comparison of source data against CRF (case re­port form) data,” but rather, “a re­view of source documentation to check quality of source, review pro­tocol compliance and ensure criti­cal processes and source documen­tation are adequate.” SDV, on the other hand, is defined as “the pro­cess by which data within the CRF or other data collection systems are compared to the original source of information (and vice versa).”

While this distinction pro­vides a welcome framework with which to guide site monitoring attention more effectively, confu­sion regarding the scope of SDV and SDR persists. Indeed, SDV’s primary purpose is to verify the information transcribed in the eCRF is complete and consistent with source records. However, SDV also helps to ensure eCRF and source records together meet various protocol and clinical ex­pectations. This overlaps to some degree with TransCelerate’s defi­nition of SDR, but the overlap is complementary.

Similarly, SDR should not completely exclude eCRF review. An example is a potential adverse event identified in a laboratory report, observed when reviewing the site’s process for timely review of labs by a physician. This SDR observation rightly would com­pel the site monitor to confirm whether the adverse event also had been recorded accurately in the eCRF.

So SDV and SDR should not be thought of as mutually exclusive processes but, instead, as comple­mentary ones. It is most important to understand which activities contribute the most to ensuring overall site and data quality. A consistent understanding of each also will be key to enabling clini­cal teams to implement more ef­fective RBM programs.

 

Written by Guest Writer Kyle Given. Given is strategic consulting services principal at Medidata, responsible for the Risk-Based Monitoring consulting practice. With over 20 years in clinical research, he is a recognized expert in operational efficiency models including RBM. Previously, he was executive vice president at Research Pharmaceutical Services (RPS), designing, implementing and enhancing global site management and monitoring organizations through processes, technologies and advanced business analytics. He also led the U.S. clinical research operational team at Sanofi. www.mdsol.com

This article was reprinted from Volume 22, Issue 01, of The CenterWatch Monthly, an industry leading publication providing hard-hitting, authoritative business and financial coverage of the clinical research space. The Action Items section features short columns  focusing on actionable or how-to advice from clinical trial professionals. To submit an Action Item, please contact editorial@centerwatch.com. Subscribe >>

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