Observer-reported outcome [ObsRO]

A measurement based on an observation by someone other than the patient or a health professional such as a parent, or other non-clinical caregiver who regularly observes the patient in daily life and is in a position to report on a specific aspect of the patient’s health.

This type of measure or observer report is without medical judgment or interpretation, and includes events or behaviours that can be observed in patients who cannot communicate themselves (e.g. infants or cognitively impaired).