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. 2019 Oct 17;9:120. doi: 10.1186/s13613-019-0592-x

Table 3.

Main outcomes

Variable All (n = 195) Dark (n = 85) Light (n = 110) p
Primary outcome
 Delirium cumulative incidencea 120/179 (67) 55/77 (71) 65/102 (64) 0.28
Secondary outcomes
 Duration of delirium, daysa 3 (1–7) 3 (1–7) 3 (1–6) 0.43
 Duration of coma, days 2 (1–5) 2 (1–5) 2 (1–5) 0.76
 Patients intervened with antipsychotics to treat agitationa 32/179 (18) 19/77 (25) 13/102 (13) 0.04
 Hallucinationsa 28/179 (16) 17/77 (22) 11/102 (11) 0.04
 Self-extubation 15 (8) 5 (6) 10 (9) 0.40
 Duration of ventilation, days 7 (3–13) 7 (3–13) 7 (3–12) 0.89
 ICU LOS, days 12 (7–19) 12 (8–18) 11 (7–20) 0.67
 Hospital LOS, daysb 25 (14–49) 26 (15–53) 24 (14–43) 0.41
 ICU mortality 47 (24) 20 (24) 27 (25) 0.87
 Hospital mortalityb 60/182 (33) 24/81 (30) 36/101 (36) 0.74

Data are median (interquartile range) or numbers (percentage)

a16 patients with coma during the whole ICU stay were excluded from analysis

b13 patients transferred to other hospitals during ICU stay were excluded from analysis

ICU intensive care unit, LOS length of stay