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In a prospective study of children (age range, 8–18 years) presenting with concussion to a pediatric emergency department (ED), investigators examined whether symptom severity at time of injury predicted delayed symptom resolution (defined as 3 or more symptoms 1 month postinjury). Acute symptom severity was assessed using a graded 14-symptom inventory score (range, 0–28) that included 12 items from the Concussion Symptom Inventory plus two items about feeling irritable or sad.
Of 179 patients (mean age, 13 years) enrolled over 2.5 years, 38 (21%) met criteria for delayed symptom resolution. Initial symptom severity was a poor predictor of delayed symptom resolution (sensitivity and specificity of 63% and 50%, respectively, for the best cut-…