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Duke Activity Status Index (DASI) Calculator

  • Take care of self such as eating, dressing, bathing, or using the toilet
  • Walk indoors
  • Walk 1 to 2 blocks on level ground
  • Climb a flight of stairs or walk up a hill
  • Run a short distance
  • Do light household work such as dusting or washing dishes
  • Do moderate household work such as vacuuming, sweeping floors, or carrying groceries
  • Do heavy household work such as scrubbing floors or lifting heavy furniture
  • Do yardwork such as raking leaves or pushing a power mower
  • Have sexual relations
  • Participate in moderate recreational activities such as golf, bowling, dancing, or doubles tennis
  • Participate in strenuous sports such as swimming, singles tennis, or basketball
  • Duke Activity Status Index Explanation and Clinical Context
     The Duke Activity Status Index is a validated self administered questionnaire used to estimate functional capacity and cardiorespiratory fitness by quantifying a patient's ability to perform common daily and recreational activities. The total score represents a surrogate measure of maximal oxygen consumption which correlates strongly with peak VO2 measured during cardiopulmonary exercise testing. DASI provides clinicians with an efficient way to assess functional status in outpatient and pre operative settings especially when formal exercise testing is unavailable. A higher score reflects better functional capacity while lower values may indicate underlying cardiovascular limitation such as heart failure ischemic heart disease or deconditioning.

    DASI is widely applied for prognostic assessment because reduced functional capacity is associated with increased mortality risk hospitalization and adverse perioperative outcomes. It is also useful for monitoring clinical change over time and evaluating response to treatment. The conversion formula commonly used to estimate peak oxygen consumption is peak VO2 equals zero point forty three times DASI score plus nine point six and this relationship has been validated across multiple populations. In clinical practice the DASI score enhances risk stratification supports exercise prescription and helps identify patients who may benefit from further diagnostic evaluation.

    References:
    Hlatky MA et al. A Brief Self Administered Questionnaire to Determine Functional Capacity. American Journal of Cardiology. 1989.
    ACC AHA Guideline for Perioperative Cardiovascular Evaluation. Circulation. 2014.
    Arena R et al. Relationship between DASI and measured peak VO2. Journal of Cardiopulmonary Rehabilitation. 2002.

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