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Edinburgh Delirium Test Box for the ICU (EDTB-ICU) scores across assessments for all 11 patients who were assessed when both CAM-ICU positive (black circles) and CAM-ICU negative (white circles). A horizontal red line indicates the optimal EDTB-ICU cut-off score of ≤5 for the detection of delirium, as determined by receiver operating characteristic (ROC) analysis.
