About the Systematic Review Data Repository Plus (SRDR+)

In an effort to reduce the burden of conducting systematic reviews, researchers and developers at the Brown University Evidence-based Practice Center (EPC) (previously at Tufts Medical Center), with support from the Agency for Healthcare Research and Quality (AHRQ) developed a collaborative, Web-based repository of systematic review data. This resource serves as both an archive and data extraction tool and is shared among organizations and individuals producing systematic reviews worldwide, enabling the creation of a central database of systematic review data which may be critiqued, updated, and augmented on an ongoing basis. This database is freely accessible to facilitate evidence reviews and thus improve and speed up policy-making with regards to healthcare.

SRDR+ is an updated version of SRDR with a range of new features and improvements to the system. For a period of time, both SRDR and SRDR+ will run in parallel. We will send out notifications so that you are prepared for the eventual migration of all projects from SRDR to SRDR+.

Why have an open systematic review data repository?

Such a repository helps the world in various ways, such as through:

  • Improved access to data by consumers of systematic review evidence;
  • Promotion of transparency and reliability in the systematic review process via communal review;
  • Enhanced cooperation and utilization across related resources (such as ClinicalTrials.gov );
  • More efficient means of producing and updating systematic reviews; and
  • Facilitation of other novel avenues of inquiry, such as those investigating research methodology (e.g., comparing different types of outcomes across disciplines, or comparing methodological quality of studies based on funding sources) by concentrating relevant data into one readily available resource.

SRDR Annual Reports

The Systematic Review Data Repository has experienced significant growth since it was released to the public in June 2012. The following reports, released on an annual basis, proceed to record the growth of SRDR. We invite you to download these reports in a PDF format using the links below.

2013:SRDR Annual Report: February 2013 - November 2013 PDF (1.0MB)
2014:SRDR Annual Report: December 2013 - November 2014 PDF (1.0MB)
2015:SRDR Annual Report: December 2014 - November 2015 PDF (1.0MB)
2016:SRDR Annual Report: December 2015 - November 2016 PDF (1.0MB)
2017:SRDR Annual Report: December 2016 - November 2017 PDF (1.0MB)
2019:SRDR Annual Report: December 2017 - May 2019 PDF (1.6MB)
2020:SRDR Annual Report: June 2019 - May 2020 PDF (2.2MB)
2021:SRDR Annual Report: January 2020 - December 2020 PDF (2.3MB)
2022:SRDR Annual Report: January 2021 - December 2021 PDF (2.4MB)
2023:SRDR Annual Report: January 2022 - November 2022 PDF (1.1MB)

SRDR Project Team

Image of Ian Saldanha
Johns Hopkins University
Image of Ethan Balk
Co-Director, Principal Investigator:
Brown University

Image of Bryant Smith
Brown University
Image of Gaelen Adam
Program Manager:
Brown University
Image of Jens Jap
Lead Programmer:

Computable Publishing
Northeastern University

Amy Earley
Nira Hadar

Ramon Iovin
Stanley Ip

Sarah Keefe
Manlik Kwong

Joseph Lau
Iain Marshall

Christopher Parkin
Birol Senturk

SRDR Governance Board


Professor, Rutgers University School of Health Professions, Newark, NJ, USA
Member, MAGIC Board, University of Oslo, Oslo, Norway
Annals of Internal Medicine, Maryland, USA
Public Health Advisor, Centers for Disease Control and Prevention (CDC), Atlanta, GA, USA
US Veterans Affairs, Salt Lake City, UT, USA
USDA Center for Nutrition Policy and Promotion
Associate Director, Evidence for Policy and Practice Information and Co-ordinating Centre (EPPI-Centre), University College London, London, UK
ECRI/Penn Evidence-based Practice Center, Philadelphia, PA, USA
Essex Management, Maryland, USA


Professor Emeritus and Former Director, Cochrane Eyes and Vision, Johns Hopkins University, Baltimore, MD, USA
Editor-in-Chief, Annals of Internal Medicine, American College of Physicians, Philadelphia, PA, USA
Senior Director, Clinical Policy Research & Development, Aetna, Hartford, CT, USA
Editor-in-Chief, Systematic Reviews, Associate Professor, University of Ottawa, Ottawa, ON, Canada
Associate Professor and Director, Johns Hopkins Evidence-based Practice Center, Johns Hopkins University, Baltimore, MD, USA
Technical Lead, Vivli, Professor, University of California San Francisco, San Francisco, CA, USA
Lead Nutritionist, US Department of Agriculture Center for Nutrition Policy and Promotion, Alexandria, VA, USA
Professor and Director, Centre for Reviews and Dissemination, University of York, York, UK
Editor-in-Chief, Cochrane Library, London, UK
Director, Center for Healthcare Delivery and Service and Innovation, University of Chicago, Chicago, IL, USA
Chief Executive Officer, Campbell Collaboration, Washington University in St. Louis, St. Louis, MO, USA
Senior Scientific Officer, Patient-Centered Outcomes Research Institute, Washington, DC, USA
Global Head of Quality, Methodology & Innovation, Doctor Evidence, LLC., Santa Monica, CA, USA
Former Director, ClinicalTrials.gov, National Library of Medicine, Bethesda, MD, USA
For more information, please contact us at SRDR@ahrq.hhs.gov.