Saved Results

No results saved yet.

Enter a patient name and hit Save on a result.

Clinical calculator summary

ECOG Performance Status

The ECOG (Eastern Cooperative Oncology Group) Scale of Performance Status is a standard criteria for assessing how a patient's disease is progressing, assessing how the disease affects the daily living abilities of the patient, and determining appropriate treatment and prognosis.

Evidence-based context for fast calculator use

Purpose:
ECOG Performance Status quantifies functional capacity in cancer patients to determine treatment eligibility and dose modification needs.
Population:
patients whose general oncology assessment matches the intended use of the selected score
Factors:
Physical Ability / Work Capacity, Confinement to Bed or Chair, Ability to Perform Self-Care
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.
HomeECOG Performance Status
Pin your most used calculators here by clicking the star in the dropdown.

ECOG Performance Status

Clinical Context & Background

The ECOG (Eastern Cooperative Oncology Group) Scale of Performance Status is a standard criteria for assessing how a patient's disease is progressing, assessing how the disease affects the daily living abilities of the patient, and determining appropriate treatment and prognosis. This calculator derives the grade based on functional capacity questions rather than simple selection.
Primary Source EvidenceOken 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.
Formula Logic
Derived from Physical Ability, Bed/Chair Confinement, and Self-Care capacity.

Reference Data

ECOG GradeKPS EquivalentTherapeutic ImplicationsPhysical Capability
0100Standard full-dose treatment generally appropriateFull active, no restriction
180 - 90Standard full-dose treatment generally appropriateRestricted strenuous activity, ambulatory
260 - 70Increased toxicity risk; consider dose adjustmentSelf-care, no work, <50% in bed
340 - 50Systemic therapy often contraindicatedLimited self-care, >50% in bed
410 - 30Best Supportive Care (BSC) usually recommendedCompletely disabled, 100% in bed

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 eCOG Performance Status quantifies functional capacity in cancer patients to determine treatment eligibility and dose modification needs.
  • 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 4.
  • 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 Physical Ability / Work Capacity, Confinement to Bed or Chair, Ability to Perform Self-Care, calculate the result, and confirm that its classification matches the highlighted reference band before continuing the disease-specific pathway.

Share This Calculator

Share:

Related Tools

Body Surface Area (BSA)Karnofsky Performance Status (KPS)WHO Performance Status

Frequently Asked Questions

What is the ECOG Performance Status scale?

The ECOG Performance Status is a standardized scale developed by the Eastern Cooperative Oncology Group to assess how a cancer patient's disease affects their daily living abilities. It ranges from 0 (fully active) to 4 (completely disabled) and helps clinicians determine appropriate treatment options and prognosis.

How does ECOG score affect cancer treatment decisions?

ECOG performance status directly influences treatment eligibility. Patients with ECOG 0-1 are typically candidates for standard chemotherapy regimens. ECOG 2 patients may receive modified doses, while ECOG 3-4 patients often benefit more from supportive care than aggressive treatment due to increased toxicity risks.

What is the difference between ECOG and Karnofsky Performance Status?

Both scales measure functional status, but ECOG uses 5 grades (0-4) while Karnofsky uses percentages (0-100%). ECOG is simpler and more commonly used in clinical trials. Generally, ECOG 0 = KPS 100%, ECOG 1 = KPS 80-90%, ECOG 2 = KPS 60-70%, ECOG 3 = KPS 40-50%, and ECOG 4 = KPS 10-30%.

Can ECOG performance status change during cancer treatment?

Yes, ECOG status is dynamic and should be reassessed regularly. It may improve with successful treatment or worsen with disease progression or treatment toxicity. Changes in ECOG status often prompt treatment modifications.

Evidence-based oncology decision support. Verify with clinical guidelines.