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Table 3 Main outcomes

From: Impact of natural light exposure on delirium burden in adult patients receiving invasive mechanical ventilation in the ICU: a prospective study

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
  1. Data are median (interquartile range) or numbers (percentage)
  2. a16 patients with coma during the whole ICU stay were excluded from analysis
  3. b13 patients transferred to other hospitals during ICU stay were excluded from analysis
  4. ICU intensive care unit, LOS length of stay