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Table 3 Factors related to patient characteristics

From: Risk factors for delirium in intensive care patients: a prospective cohort study

 

n

Mean (SD) or %

univariate

multivariate

 

D

ND

D

ND

P*

OR (CI)

OR (CI)

age in years (mean, SD)

155

368

65.0 (16.4)

63.7 (14.6)

0.36

1.01 (0.99 to 1.02)

 

age more than 65

91/155

202/368

55%

59%

0.24

1.17 (0.80 to 1.71)

 

gender masculine

90/155

220/368

58%

60%

0.40

0.93 (0.64 to 1.36)

 

living single at home

45/114

38/68

56%

40%

0.02

1.94 (1.06 to 3.57)

 

units of alcohol per day

58

172

3.2 (5.2)

2.1 (3.9)

0.09

1.05 (0.99 to 1.12)

 

daily use of alcohol

44/142

94/354

31%

27%

0.19

1.24 (0.81 to 1.90)

 

daily use of more than three units of alcohol

21/58

32/172

36%

19%

0.01

2.48 (1.29 to 4.80)

3.23 (1.30 to 7.98)

number of cigarettes per day

46

175

11.4 (13.6)

6.4 (9.6)

0.02

1.04 (1.01 to 1.07)

 

daily smoking

33/153

98/366

22%

27%

0.13

0.75 (0.48 to 1.18)

 

daily smoking of more than 10 cigarettes

22/46

54/174

48%

31%

0.03

2.04 (1.05 to 3.95)

 
  1. Continuous variables are presented in number, mean and standard deviation (SD); categorical variables are presented in number per group and percentage.
  2. * P value of difference in groups, calculated with independent samples t-test for continuous variables, with Chi squared for categorical variables.
  3. CI = confidence interval; D = delirium group; ND = non-delirium group; OR = odds ratio.
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