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    Attention COACH STUDY participants:

    The principal investigators of the study request that you use the official version of the modified score here.

    Crohn's Disease Activity Index (CDAI)

    Determines the current severity of Crohn’s disease.

    INSTRUCTIONS

    Signs, symptoms, and history should be based on the past 7 days. Note: for abdominal pain and general well-being ratings, this calculator uses an average rating per day over the past 7 days. For stools, use the total number of soft/liquid stools over the past 7 days.
    When to Use
    Pearls/Pitfalls
    Why Use

    Adults with active Crohn’s disease.

    • The Crohn's Disease Activity Index (CDAI) allows quantitation and tracking of disease activity in adults with Crohn’s disease.
    • The CDAI may have wide variation in definitions and scoring in real world use.
    • Lab variations of “normal” hematocrit in men and women can often lead to markedly different CDAI scores; similarly, changes in weight can lead to score differences as well.

    Crohn’s disease is a complex and multifactorial entity. Assessment of disease activity and quality of life are difficult to quantify — a standardized, accurate tool helps compare severity across patients, as well as track individual patients over time.

    lbs
    lbs
    Female
    Male
    stools
    rating
    rating
    No
    0
    Yes
    +1
    No
    0
    Questionable
    +2
    Definite
    +5
    %
    Extraintestinal Findings/Complications
    No
    0
    Yes
    +1
    No
    0
    Yes
    +1
    No
    0
    Yes
    +1
    No
    0
    Yes
    +1
    No
    0
    Yes
    +1
    No
    0
    Yes
    +1

    Result:

    Please fill out required fields.

    Next Steps
    Evidence
    Creator Insights
    Dr. William R. Best

    About the Creator

    William R. Best, MD, was a faculty member and assistant dean in the College of Medicine at the University of Illinois Chicago Professional Colleges. He was later appointed Chief of Staff at Hines VA Hospital and the associate dean for Veterans Affairs at Loyola University Chicago.

    To view Dr. William R. Best's publications, visit PubMed

    Are you Dr. William R. Best? Send us a message to review your photo and bio, and find out how to submit Creator Insights!
    MDCalc loves calculator creators – researchers who, through intelligent and often complex methods, discover tools that describe scientific facts that can then be applied in practice. These are real scientific discoveries about the nature of the human body, which can be invaluable to physicians taking care of patients.
    About the Creator
    Dr. William R. Best
    Are you Dr. William R. Best?
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