Calc Function

    • Calcs that help predict probability of a diseaseDiagnosis
    • Subcategory of 'Diagnosis' designed to be very sensitiveRule Out
    • Disease is diagnosed: prognosticate to guide treatmentPrognosis
    • Numerical inputs and outputsFormula
    • Med treatment and moreTreatment
    • Suggested protocolsAlgorithm





    Chief Complaint


    Organ System


    Patent Pending

    Editorial Board

    MDCalc’s Editorial Board is comprised of key leaders in the medical specialties and subspecialties. The board members have contributed to medical education in their fields, including publishing in the medical literature and holding leadership positions at their institutions and societies. Board members advise MDCalc on content in their specialty as well as recruit contributors to author calculator content.

    Board members may be nominated for consideration by sending an email to

    Shannon Chang, MD

    Shannon Chang, MD, is an assistant professor in the department of medicine at NYU Langone Medical Center. She is also associate director of the gastroenterology fellowship program. Dr. Chang specializes in ulcerative colitis, Crohn's disease, and J-pouch disorders, and is currently co-investigator of multiple clinical trials in inflammatory bowel disease.

    Institutional Profile

    Nicholas Genes, MD, PhD

    Nicholas Genes, MD, PhD, is board certified in emergency medicine and clinical informatics. He is an associate professor of emergency medicine, and genetics and genomic sciences. He was recently elected chair of the American College of Emergency Physicians’ Informatics Section. Dr. Genes is a national leader in emergency medical applications of telemedicine, mobile health, social media, and health information technology.

    Institutional Profile

    Joseph Habboushe, MD, MBA

    Joseph Habboushe, MD, MBA, is a practicing emergency physician and assistant professor at New York University Langone Medical Center and Bellevue Medical Centers in New York City. He is the CEO and co-founder of MDCalc. Dr. Habboushe is also the creator and editor-in-chief of the pocket guide series, The Basics of Emergency Medicine, published by the Emergency Medicine Residents' Association.

    Institutional Profile

    Rachel Kwon, MD

    Rachel Kwon, MD, is the managing editor at MDCalc. Her clinical training is in general surgery, and she is a former research fellow in patient safety and evidence-based surgery in the Nuffield Department of Surgical Sciences at the University of Oxford. She is also co-author and co-editor of 50 Studies Every Surgeon Should Know (Oxford University Press).

    Jarone Lee, MD, MPH

    Jarone Lee, MD, MPH, is an assistant professor of emergency medicine and surgery at Harvard Medical School, and medical director of Blake 12 Intensive Care Unit at Massachusetts General Hospital. Previously, he was an emergency physician at St. Luke’s-Roosevelt Hospital Center, where he also did his residency training. Dr. Lee has published dozens of peer-reviewed papers and book chapters in emergency medicine and critical care.

    Institutional Profile

    Kenny Lin, MD, MPH

    Kenny Lin, MD, MPH, is a practicing family physician, professor of family medicine at Georgetown University Medical Center, and deputy editor of American Family Physician, the best-read journal in primary care. He is also associate editor of the point-of-care reference Essential Evidence Plus and writes the popular health blog Common Sense Family Doctor.

    Institutional Profile

    Ali Raja, MD, MBA, MPH

    Ali Raja, MD, MBA, MPH, is the executive vice chair for the department of emergency medicine at Massachusetts General Hospital, as well as an associate professor of emergency medicine and radiology at Harvard Medical School. Board certified in emergency medicine and clinical informatics, he leads the team at the Harvard Medical School Library of Evidence and is a board member for the Society for Academic Emergency Medicine. Dr. Raja is a national leader in emergency department operations, imaging utilization, and the integration of clinical decision support into electronic health records.

    Institutional Profile

    Graham Walker, MD

    Graham Walker, MD, is a staff emergency physician at Kaiser San Francisco. He is also an associate professor in the department of emergency medicine at the University of California, San Francisco. Dr. Walker is the creator and developer of MDCalc and remains active in its content and calculator development, along with many other endeavors as president of MD Aware, LLC, MDCalc’s parent company.

    Institutional Profile