a type of outcome measure that evaluates how well an individual completes a standardized task under direct observation, typically in a controlled setting. These measures assess a person’s ability to perform specific functions or activities and are recorded by a trained observer using predefined criteria.
Abbreviation: PerfO
Example
In a clinical study on arthritis, researchers use the 6-Minute Walk Test (6MWT) as a Performance Outcome to measure participants’ functional exercise capacity. Another PerfO example is a grip strength test, which objectively assesses hand function and muscle strength.