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Table 1 Characteristics of study participants

From: Association between the presence of delirium during intensive care unit admission and cognitive impairment or psychiatric problems: the Korean ICU National Data Study

Variables

Patients with delirium (n = 168,190)

Patients without delirium (n = 137,821)

p

Age, years

57.9 (12.3)

58.7 (15.0)

< 0.001

Sex, male

108,766 (64.7)

89,725 (65.1)

0.01

Admitted department

  

< 0.001

 Medical

95,570 (56.8)

60,504 (43.9)

 

 Surgical

72,620 (43.2)

77,317 (56.1)

 

 Charlson’s comorbidity index

2 (0–4)

2 (0–3)

< 0.001

Comorbidities

 

 Myocardial infarction

5709 (3.4)

5593 (4.1)

< 0.001

 Congestive heart failure

14,017 (8.3)

9809 (7.1)

< 0.001

 Peripheral vascular disease

19,178 (11.4)

15,511 (11.3)

0.2

 Cerebrovascular disease

21,771 (12.9)

18,805 (13.6)

< 0.001

 Chronic pulmonary disease

44,498 (26.5)

34,262 (24.9)

< 0.001

 Connective tissue disease

5150 (3.1)

3959 (2.9)

0.002

 Peptic ulcer disease

40,118 (23.9)

32,633 (23.7)

0.26

 Liver disease

39,718 (23.6)

30,881 (22.4)

< 0.001

 Diabetes mellitus

44,871 (26.7)

37,531 (27.2)

< 0.001

 Paraplegia and hemiplegia

2252 (1.3)

1449 (1.1)

< 0.001

 Renal disease

7039 (4.2)

5667 (4.1)

0.31

 Cancer

35,351 (21.0)

27,319 (19.8)

< 0.001

 AIDS/HIV

83 (0.0)

58 (0.0)

0.35

Medical beneficiaries

5030 (3.0)

3443 (2.5)

< 0.001

Region

< 0.001

 Seoul

86,242 (51.3)

62,832 (45.6)

 

 Metropolitan area

44,620 (26.5)

42,065 (30.5)

 

 Rural area

37,328 (22.2)

32,924 (23.9)

 

Advanced intervention

 

 Mechanical ventilation

62,242 (37.0)

6166 (4.5)

< 0.001

 ECMO

903 (0.5)

34 (0.0)

< 0.001

 Hemodialysis

4464 (2.7)

868 (0.6)

< 0.001

 Vasopressor drugs

84,240 (50.1)

33,118 (24)

< 0.001

ICU length of stay, days

3 (1–6)

2 (0–4)

< 0.001

ICU admission over 7 days

41,786 (24.8)

8406 (6.1)

< 0.001

Hospital length of stay, days

16 (9–30)

8 (4–14)

< 0.001

Quality of ICU

< 0.001

 Grade 1

49,633 (29.5)

37,495 (27.2)

 

 Grade 2

38,051 (22.6)

30,708 (22.3)

 

 Grade 3

55,629 (33.1)

53,005 (38.5)

 

 Grade ≥ 4

24,877 (14.8)

16,613 (12.1)

 
  1. Data are presented number (percentage), mean (standard deviation) or median (interquartile range)
  2. AIDS acquired immune deficiency syndrome, HIV human immunodeficiency virus, ECMO extracorporeal membrane oxygenation, ICU intensive care unit
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Journal of Intensive Care

ISSN: 2052-0492