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. 2023 Apr 13;37(4):511–521. doi: 10.1007/s00540-023-03193-5

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Fig. 2 — Richards Campbell Sleep Questionnaire scores distribution between two groups of the first 3 nights after surgery. Horizontal stacked bar graphs show Richards Campbell Sleep Questionnaire score distribution between BIS-guided sedation group and routine care group of A night of the surgery, B first night after surgery and C second night after surgery. Bars are labelled with proportions