Hamilton Score for DVT Clinical Probability
Hamilton score (Subramaniam 2006): 7-item clinical pretest probability score for lower-limb DVT in ambulatory emergency department patients. ≥ 3 = DVT likely; ≤ 2 = unlikely.
Score interpretation
DVT unlikely. In the derivation study an unlikely score with a negative D-dimer had a negative predictive value of 99%.
→ D-dimer: if negative, DVT is excluded without ultrasound; if positive, leg vein ultrasound.
DVT likely.
→ Leg vein ultrasound; if it cannot be done promptly, consider interim anticoagulation (NICE NG158).
Interpretation bands for the Hamilton Score. Apply clinical judgement and local guidance.
References
- Subramaniam RM, Chou T, Heath R, Allen R. Importance of pretest probability score and D-dimer assay before sonography for lower limb deep venous thrombosis. AJR Am J Roentgenol. 2006;186(1):206–212.
Related
Curated clinical cross-links plus same-class fallbacks.
- Acute Asthma in Adults · BTS/SIGN British Guideline on Asthma 2019; NICE NG80
- Pulmonary Embolism Assessment · NICE NG158; ESC 2019 PE Guidelines
- Acute Exacerbation of COPD (AECOPD) · NICE NG115; GOLD 2024
- Spontaneous Pneumothorax (Adult) · BTS Pleural Disease 2023
- Atypical Pneumonia (Legionella / Mycoplasma / Chlamydophila) · BTS 2023; IDSA
- COPD Exacerbation Management · NICE NG115 / GOLD 2024
Decision support only — verify against a current formulary, NICE, or your local guideline before clinical use.