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Eastern Cooperative Oncology Group (ECOG) Performance Status
Functional status scale used to gauge fitness for cancer therapy.
Eastern Cooperative Oncology Group (ECOG) Performance Status
Performance status
ResultECOG 0
Generally fit for standard-intensity systemic therapy.
- ECOG grade
- 0
When to use
- Documenting functional status to guide chemotherapy eligibility, clinical trial enrollment, and prognosis discussions.
Formula
Ordinal scale from 0 (fully active) to 5 (dead), assigned by clinician judgment based on the patient's activity level and self-care ability; not an additive score.
Pearls and pitfalls
- Simpler and more widely used in oncology trials than the 11-point Karnofsky scale, though the two correlate.
- A change of ≥2 grades over a short interval often signals rapid clinical decline.