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Table 3 Results from the sleep evaluation per site and of all sites; average scores per item of the Richards Campbell sleep questionnaire (RSCQ) and the average overall RCSQ score are expressed as mean mm (SD)

From: Noise in the intensive care unit and its influence on sleep quality: a multicenter observational study in Dutch intensive care units

Site number Sleep depth Falling asleep Awakening Return to sleep Sleep quality Average RCSQ score
1 50 (26) 67 (31) 59 (26) 52 (30) 59 (27) 57 (23)
2 64 (24) 54 (33) 66 (30) 56 (26) 69 (26) 62 (26)
3 52 (26) 44 (29) 50 (25) 48 (34) 46 (31) 48 (23)
4 46 (16) 56 (24) 49 (24) 50 (27) 51 (28) 50 (20)
5 61 (28) 64 (31) 65 (26) 59 (32) 60 (30) 62 (27)
6 60 (16) 67 (22) 61 (21) 56 (22) 65 (22) 62 (18)
All sites 54 (25) 60 (30) 58 (26) 53 (30) 57 (29) 56 (24)