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Table 1 Baseline characteristics

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

Demographics

 Age, years

60 (50–69)

61 (51–68)

60 (48–70)

0.85

 Male gender

135 (69)

58 (68)

77 (70)

0.79

History

 Immunodepression

25 (13)

12 (14)

13 (12)

0.64

 Chronic antipsychotic use

13 (7)

6 (7)

7 (6)

0.84

 Hypertension

93 (48)

38 (45)

55 (50)

0.46

 Current smoking

68 (35)

31 (36)

37 (34)

0.68

 COPD

37 (19)

20 (24)

17 (15)

0.15

 Drug abuse

10 (5)

5 (6)

5 (5)

0.67

 Benzodiazepine use

31 (16)

12 (14)

19 (17)

0.55

 Cirrhosis

14 (7)

5 (6)

9 (8)

0.54

 Alcohol abuse

46 (24)

24 (28)

22 (20)

0.18

 Diabetes

45 (23)

18 (21)

27 (25)

0.58

 Mild cognitive impairment

2 (1)

0 (0)

2 (2)

0.21

 Charlson comorbidity index

2 (1–4)

2 (1–4)

2 (1–4)

0.20

Medical admission

134 (69)

52 (61)

82 (75)

0.05

Sepsis at admission

124 (64)

54 (64)

70 (64)

0.99

SOFA score

9 (7–11)

8 (6–11)

9 (7–11)

0.22

SAPS 2

51 (36–64)

52 (36–61)

50 (36–65)

0.64

ICU admission diagnosis

 Respiratory failure or sepsis

105 (54)

46 (54)

59 (54)

0.85

 Cardiogenic shock

32 (16)

13 (15)

19 (17)

0.71

 Cardiothoracic surgery

26 (13)

13 (15)

13 (12)

0.48

 Other

32 (16)

13 (15)

19 (17)

0.71

  1. Data are median (interquartile range) or numbers (percentage)
  2. COPD chronic obstructive pulmonary disease, SOFA Sepsis Organ Failure Assessment, SAPS 2 Simplified Acute Physiology Score 2