Fig. 1From: Circadian rhythm disturbance and delirium in ICU patients: a prospective cohort studyCircadian rhythm of melatonin with and without delirium. Data were shown as mean. Delirium group: mesor:67.60 amplitude:21.78 acrophase:23.33. Non-delirium group: mesor:102.93 amplitude:42.85 acrophase:0.18Back to article page