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For ambulatory cancer patients, Ontario has standardized symptom and performance status assessment population‐wide, using the Edmonton Symptom Assessment System (ESAS) and Palliative Performance Scale (PPS). In a broad cross‐section of cancer outpatients, the authors describe the ESAS and PPS scores and their relation to patient characteristics.

This is a descriptive study using administrative healthcare data.

The cohort included 45,118 and 23,802 patients' first ESAS and PPS, respectively. Fatigue was most prevalent (75%), and nausea least prevalent (25%) in the cohort. More than half of patients reported pain or shortness of breath; about half of those reported moderate to severe scores. Seventy‐eight percent had stable performance status scores. On multivariate analysis, worse ESAS outcomes were consistently seen for women, those with comorbidity …