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Table 6 Environmental factors

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)
admission via emergency room 60/118 119/259 51% 46% 0.22 1.22 (0.79 to 1.88)  
admission via transfer 36/118 47/259 31% 18% 0.006 1.98 (1.20 to 3.28)  
open room in intensive care 52/149 98/359 35% 27% 0.055 1.43 (0.95 to 2.15)  
isolation 16/155 11/368 10% 3% 0.001 3.74 (1.69 to 8.25) 2.89 (1.00 to 8.36)
no visible daylight 70/155 118/368 45% 32% 0.003 1.75 (1.19 to 2.56) 2.39 (1.28 to 4.45)
no clock present or visible 19/155 36/368 12% 10% 0.243 1.29 (0.71 to 2.33)  
number of visitors 88 168 2.4 (1.9) 2.5 (2.0) 0.70 0.97 (0.85 to 1.11)  
no visit 27/96 21/173 28% 12% 0.001 2.83 (1.50 to 5.36) 3.73 (1.75 to 7.93)
physical restraints 25/66 4/226 38% 2% <0.001 33.84 (11.19 to 102.36)  
  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.