Skip to main content
Intermediate Technical IVT

Performance Status

Standardized assessment of a patient's functional ability and daily activity level.

Full Definition

Performance Status is a standardized measure used to assess a cancer patient's functional capacity and ability to perform daily activities. The most commonly used scales are the ECOG (Eastern Cooperative Oncology Group) and Karnofsky scales. These assessments help clinicians determine treatment eligibility, predict prognosis, and monitor treatment effects. Performance status is a critical factor in treatment decision-making, as patients with poor performance status may not tolerate aggressive therapies and may require modified treatment approaches.

Usage

Usage note: Capitalize both words when referring to the formal assessment scale.

In Context

  • "The patient's Performance Status of 2 indicated significant limitation in daily activities." — Clinical assessment
  • "Improved Performance Status following treatment suggested better treatment tolerance." — Progress evaluation

Also known as

functional status activity level assessment

Don't confuse with

quality of life symptom assessment

Editors from these organisations have used our services since 1998

Reuters BBC Oxford University Press Penguin Random House Springer Microsoft Suncor Energy United Nations Fisher Investments IBM The Home Depot KODAK CHEVRON