DASI score = sum of the weights for each activity the patient can perform without difficulty (Yes responses).

Item	Activity	Weight (points)
1	Able to care for self (eating, dressing, bathing, toileting)	2.75
2	Walk indoors, such as around the house	1.75
3	Walk 1–2 blocks on level ground	2.75
4	Climb a flight of stairs or walk up a hill	5.50
5	Run a short distance	8.00
6	Do light housework such as dusting or washing dishes	2.70
7	Do moderate housework such as vacuuming, sweeping floors or carrying groceries	3.50
8	Do heavy housework such as scrubbing floors or moving heavy furniture	8.00
9	Do yard work such as raking leaves, weeding or pushing a mower	4.50
10	Have sexual relations	5.25
11	Participate in moderate recreational activities such as golf, bowling, dancing, doubles tennis or throwing a ball	6.00
12	Participate in strenuous sports such as swimming, singles tennis, football, basketball or skiing	7.50

Total DASI score = sum of weights for all activities answered Yes (range 0–58.2, higher scores indicate better functional capacity).

Predicted peak VO₂ (mL/kg/min) = 0.43 × DASI score + 9.6.

Estimated METs = predicted peak VO₂ ÷ 3.5.

Duke Activity Status Index (DASI)