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ObjectiveTo describe variability of pain intensity experienced by youths with juvenile idiopathic arthritis (JIA) and examine factors related to within‐day patterns of pain and the relationship between magnitude of pain variability and quality of life.
MethodsPain intensity was self‐reported on a visual analog scale (VAS; range 0–100) by 112 youths with JIA ages 8–18 years using electronic diaries...