Duke Activity Status Index (DASI, Functional Capacity)
Duke Activity Status Index (Hlatky 1989): twelve weighted activities-of-daily-living items give a functional-capacity score and an estimated peak VO₂ / MET level; below ~4 METs flags reduced capacity.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Take care of yourself
- Yes
- Walk indoors, such as around your house
- Yes
- Walk a block or two on level ground
- Yes
- Climb a flight of stairs or walk up a hill
- Yes
- Light housework
- Yes
- Moderate housework
- Yes
- Yard work
- Yes
- Sexual relations
- Yes
Result: DASI 28.7 — peak VO₂ 21.9 mL/kg/min (≈ 6.3 METs); at or above the 4-MET functional-capacity threshold.
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Score
- The 12 affirmed activities are summed by their METs weights (maximum 58.2). Peak VO₂ (mL/kg/min) = 0.43 × DASI + 9.6; METs = VO₂ / 3.5.
- Meaning
- A self-report functional-capacity estimate used in preoperative and cardiac assessment. < 4 METs marks poor capacity linked to higher perioperative risk. Decision support, not an order.
What you enter
- Take care of yourself (eat, dress, bathe, use toilet)
- Walk indoors, such as around your house
- Walk a block or two on level ground
- Climb a flight of stairs or walk up a hill
- Run a short distance
- Light housework (dusting, washing dishes)
- Moderate housework (vacuuming, carrying groceries)
- Heavy housework (scrubbing floors, moving furniture)
The other 4 fields
- Yard work (raking, mowing, hedging)
- Sexual relations
- Moderate recreation (golf, bowling, dancing, doubles tennis)
- Strenuous sports (swimming, singles tennis, skiing)
How this is calculated
Hlatky MA, Boineau RE, Higginbotham MB, et al. A brief self-administered questionnaire to determine functional capacity (the Duke Activity Status Index). Am J Cardiol. 1989;64(10):651-654. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.