HAMILTON score calculator

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Sadaf Sharfaei M.D.[2]

HAMILTON Score Calculator

Calculation of the HAMILTON Score

Check all boxes that apply to your patient:

Wells Score Calculator for DVT
Variable	Score
Active cancer (treatment within last 6 months or palliative)	1
Calf swelling >3 cm compared to other calf (measured 10 cm below tibial tuberosity)	1
Collateral superficial veins (non-varicose)	1
Pitting edema (confined to symptomatic leg)	1
Swelling of entire leg	1
Localized pain along distribution of deep venous system	1
Paralysis, paresis, or recent cast immobilization of lower extremities	1
Recently bedridden > 3 days, or major surgery requiring regional or general anesthetic in past 12 weeks	1
Alternative diagnosis at least as likely	-2
Wells Score:
Interpretation:

Interpretation of the HAMILTON Score

The interpretation of the score is as follows:

• Score ≤2: Unlikely probability of DVT
• Score ≥3: Likely probability of DVT
• The combination of a HAMILTON score ≤2 and a negative D-dimer excludes DVT with a negative predictive value of 99%.