Calc Function

    • Calcs that help predict probability of a diseaseDiagnosis
    • Subcategory of 'Diagnosis' designed to be very sensitiveRule Out
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    Duke Activity Status Index (DASI)

    Estimates functional capacity.
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    INSTRUCTIONS

    Answers are self-reported. Provides an estimate of functional capacity, and may not be as accurate as objective measurements such as exercise stress testing.

    When to Use

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    Is the patient able to:

    Result:

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    Evidence
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    Advice

    Do you use the Duke Activity Status Index and want to contribute your expertise? Join our contributor team!

    Formula

    Addition of the selected points (self-reported by patient):

    Is the patient able to:

    Yes

    No

    Take care of self (e.g. eating, dressing, bathing, using the toilet)

    +2.75

    0

    Walk indoors

    +1.75

    0

    Walk 1–2 blocks on level ground

    +2.75

    0

    Climb a flight of stairs or walk up a hill

    +5.5

    0

    Run a short distance

    +8.0

    0

    Do light work around the house (e.g. dusting, washing dishes)

    +2.7

    0

    Do moderate work around the house (e.g. vacuuming, sweeping floors, carrying in groceries)

    +3.5

    0

    Do heavy work around the house (e.g. scrubbing floors, lifting or moving heavy furniture)

    +8.0

    0

    Do yardwork (e.g. raking leaves, weeding, pushing a power mower)

    +4.5

    0

    Have sexual relations

    +5.25

    0

    Participate in moderate recreational activities (e.g. golf, bowling, dancing, doubles tennis, throwing a baseball or football)

    +6.0

    0

    Participate in strenuous sports (e.g. swimming, singles tennis, football, basketball, skiing)

    +7.5

    0

    Facts & Figures

    Interpretation:

    VO2 peak (mL/kg) = 0.43 × DASI + 9.6

    METs (metabolic equivalents) = VO2 peak / 3.5

    VO2 peak is maximal oxygen consumption (gold standard measurement is by exercise stress testing).

    Literature

    Dr. Mark Hlatky

    About the Creator

    Mark A. Hlatky, MD, is a professor of cardiovascular medicine and health research and policy at Stanford University. He is also a Fellow of the Center on Health Policy (CHP) and the Center on Primary Care and Outcomes Research (PCOR) at Stanford. Dr. Hlatky’s research interests include improved outcomes and cost effectiveness of cardiovascular treatments through the application of evidence-based medicine.

    To view Dr. Mark Hlatky's publications, visit PubMed