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      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

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    Patent Pending

    GAP Index for Idiopathic Pulmonary Fibrosis (IPF) Mortality

    Provides 1, 2, and 3-year mortality estimates for IPF patients.
    When to Use
    Pearls/Pitfalls
    Why Use

    1, 2, and 3-year prognostication for IPF patients needing lung transplantation.

    • The GAP index is more sensitive, but less specific, than the the du Bois Score for predicting mortality.
    • The external validation concludes that the GAP index correlates well with 1-year mortality but NOT 3-year mortality.

    Simple, externally validated, scoring system using readily available baseline parameters.

    Female
    0
    Male
    +1
    ≤60 years
    0
    61-65 years
    +1
    >65 years
    +2
    >75%
    0
    50-75%
    +1
    <50%
    +2
    >55%
    0
    36-55%
    +1
    ≤35%
    +2
    Unable to perform
    +3

    Result:

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    Next Steps
    Evidence
    Creator Insights
    Dr. Brett Ley

    About the Creator

    Brett Ley, MD, is a clinical fellow in the pulmonology department at UCSF School of Medicine. He is an active researcher on lung pathology with 2 active NIH grants and multiple published and peer reviewed papers. Dr. Ley’s research interests include interstitial lung diseases and prediction modeling.

    To view Dr. Brett Ley's publications, visit PubMed

    Are you Dr. Brett Ley? 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. Brett Ley
    Are you Dr. Brett Ley?