Clinical calculator summary
ECOG Performance Status
Clinical calculator summary
ECOG Performance Status
The ECOG Performance Status scale documents functional status using six published grades from 0 (fully active) through 5 (dead).
Evidence-based context for fast calculator use
- Purpose:
- Document the official ECOG performance status grade from 0 to 5.
- Population:
- patients whose general oncology assessment matches the intended use of the selected score
- Factors:
- ECOG Performance Status grade
- Reference:
- Oken MM, Creech RH, Tormey DC, et al. Toxicity and response criteria of the Eastern Cooperative Oncology Group. Am J Clin Oncol. 1982;5(6):649-655. PMID 7165009.
ECOG Performance Status
Clinical Context & Background
Direct selection of the official ECOG grade whose published functional description best matches the patient at the assessment time.Reference Data
| ECOG grade | Official functional description |
|---|---|
| 0 | Fully active, able to carry on all pre-disease performance without restriction |
| 1 | Restricted in physically strenuous activity but ambulatory and able to carry out work of a light or sedentary nature |
| 2 | Ambulatory and capable of all self-care but unable to carry out any work activities; up and about more than 50% of waking hours |
| 3 | Capable of only limited self-care; confined to bed or chair more than 50% of waking hours |
| 4 | Completely disabled; cannot carry on any self-care; totally confined to bed or chair |
| 5 | Dead |
Clinical Workflow
Use, Interpret, And Continue The Patient Pathway
Expand for workflow guidance, limitations, examples, and related next steps.
Clinical Workflow
Use, Interpret, And Continue The Patient Pathway
Expand for workflow guidance, limitations, examples, and related next steps.
When To Use
- Use ECOG Performance Status when document the official ECOG performance status grade from 0 to 5.
- Confirm that the patient, diagnosis, disease phase, and available inputs match the cited model before calculation.
How To Interpret
- Interpret the displayed result using the calculator-specific formula and reference table, spanning 0 through 5.
- A boundary result should prompt input verification and clinical review rather than false precision.
What To Do Next
- Integrate the result with diagnosis, disease burden, organ function, frailty, treatment intent, medicines, and patient goals.
- Document the inputs, result, timing, and clinical context so the assessment can be reproduced.
Limitations
- General oncology tools measure one domain and should not become a universal treatment-eligibility rule.
- The result supports clinician judgment and does not independently determine treatment.
Validated Population
patients whose general oncology assessment matches the intended use of the selected score
How to apply this result
For a representative case, verify ECOG Performance Status grade, calculate the result, and confirm that its classification matches the highlighted reference band before continuing the disease-specific pathway.
Calculation verification history
Verified
Calculation verification history
Verified: Production browser revalidation
- Five source-backed ECOG cases were exercised on the public production route through visible browser controls; 5/5 expected grades and official descriptions matched across grades 0 through 4.
- No unexpected N/A, literal undefined value, stale control, or browser-console error was observed.
Case-level evidence is retained in validation/browser-revalidation/ecog-performance-status-2026-08-03.json.
: Production browser validation
- Ten source-backed cases were exercised on the public production route through visible browser controls; 10/10 case records passed their expected-versus-observed assertions across 0 visible submissions.
- Overall browser status: failed-console. medium: Production emitted minified React error #418 during route loads/reloads used by this run.
- Case-level inputs, expected and observed results, reset/repeat behavior, failure reproductions, and console evidence are retained in the production-browser evidence record.
Case-level production evidence is retained in validation/browser-production/ecog-performance-status.json.
: Guided entry verification
- Added exact official descriptions and a direct-grade shortcut while preserving one authoritative grade value.
- Passed 41/41 strict-engine, browser-serialization, guided/direct parity, and malformed-input checks.
- Confirmed complete ECOG 0-5 coverage without automatic treatment advice or cross-scale derivation.
: Full validation test
- Passed 18/18 official-grade, exact-description, missing-input, extra-input, malformed-input, and out-of-range checks.
- Confirmed complete grade coverage from ECOG 0 through ECOG 5.
: Correction
- Replaced three favorable defaulted questions and a custom derivation tree with direct selection of one official ECOG grade.
- Added the omitted official grade 5 and exact published descriptions.
- Removed inaccurate KPS bands and universal chemotherapy, dose-reduction, contraindication, and supportive-care directives that are not part of the ECOG scale.
- Clarified observer variability, reassessment, causal context, and protocol-specific interpretation.
Included in the current validation report.
Verification confirms the calculator implementation against the cited model; it is not independent clinical validation, regulatory approval, or medical advice.
Frequently Asked Questions
What does ECOG measure?
It records observed functional activity, work capacity, self-care, and time confined to bed or chair.
Does ECOG alone determine treatment?
No. Treatment and trial eligibility use disease- and protocol-specific criteria plus comorbidity, frailty, organ function, goals, and clinician judgment.
Should ECOG be reassessed?
Yes. Functional status can change with disease, intercurrent illness, toxicity, symptom control, and rehabilitation; document the assessment date.
Evidence-based oncology decision support. Verify with clinical guidelines.