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Table 2 In-hospital mortality, LOS in the ICU and in hospital, nursing hours and costs per case in delirious and non-delirious patients with a main diagnosis, which refers to the top-seven ICD-10 diagnoses chapters

From: A hospital-wide evaluation of delirium prevalence and outcomes in acute care patients - a cohort study

Outcome by ICD-10 chapter   Non-delirious (DOS < 3, ICDSC < 4)   Delirious (DOS ≥ 3, ICDSC ≥4) Difference p
Mortality n n dead (%) n n dead (%) odds ratio (95% CI)  
Diseases of circulatory system 1'470 41 (3%) 758 67 (9%) 3.38 (2.27 to 5.04) < 0.001
Neoplasms 1'295 36 (3%) 380 51 (13%) 5.42 (3.48 to 8.45) < 0.001
Injury/poisoning of external cause 446 12 (3%) 256 28 (11%) 4.44 (2.22 to 8.90) < 0.001
Diseases of the digestive system 315 5 (2%) 101 15 (15%) 10.81 (3.82 to 30.59) < 0.001
Diseases of nervous system 242 3 (1%) 113 7 (6%) 5.26 (1.33 to 20.74) 0.0177
Infections/parasites 80 5 (6%) 78 22 (28%) 5.89 (2.10 to 16.52) < 0.001
Diseases of respiratory system 232 7 (3%) 59 12 (20%) 8.21 (3.07 to 21.95) < 0.001
other 1'214 6 (0%) 253 14 (6%) 11.79 (4.49 to 30.98) < 0.001
ICU LOS [days] n median (95% CI) n median (95% CI) hazard ratio (95% CI)  
Diseases of circulatory system 331 1.0 (0.9 to 1.0) 384 3.1 (2.7 to 4.0) 0.43 (0.37 to 0.50) < 0.001
Neoplasms 174 0.9 (0.9 to 0.9) 147 2.9 (1.9 to 4.5) 0.37 (0.29 to 0.46) < 0.001
Injury/poisoning of external cause 61 0.9 (0.8 to 1.4) 133 3.7 (3.0 to 5.4) 0.47 (0.34 to 0.64) < 0.001
Diseases of the digestive system 40 1.0 (0.9 to 1.7) 47 10.8 (4.6 to 13.5) 0.28 (0.18 to 0.44) < 0.001
Diseases of nervous system 41 0.8 (0.7 to 0.8) 38 1.8 (0.8 to 7.5) 0.26 (0.16 to 0.40) < 0.001
Infections/parasites 8 2.0 (0.9 to –) 29 13.5 (5.2 to 25.1) 0.65 (0.22 to 1.90) 0.434
Diseases of respiratory system 33 1.1 (1.0 to 2.0) 17 1.8 (1.0 to 15.0) 0.64 (0.34 to 1.17) 0.148
other 74 0.9 (0.9 to 1.5) 56 4.9 (3.9 to 11.0) 0.34 (0.24 to 0.49) < 0.001
Hospital LOS [days] n median (95% CI) n median (95% CI) hazard ratio (95% CI)  
Diseases of circulatory system 1'470 8 (8 to 9) 758 71 (43 to –) 0.21 (0.18 to 0.25) < 0.001
Neoplasms 1'295 7 (6 to 7) 380 26 (22 to 37) 0.30 (0.25 to 0.35) < 0.001
Injury/poisoning of external cause 446 8 (7 to 9) 256 37 (33 to –) 0.23 (0.17 to 0.30) < 0.001
Diseases of the digestive system 315 6 (6 to 7) 101 31 (21 to –) 0.26 (0.19 to 0.36) < 0.001
Diseases of nervous system 242 7 (6 to 7) 113 25 (15 to –) 0.31 (0.23 to 0.43) < 0.001
Infections/parasites 80 7 (6 to 12) 78 58 (43 to –) 0.18 (0.11 to 0.30) < 0.001
Diseases of respiratory system 232 8 (7 to 10) 59 17 (14 to –) 0.42 (0.27 to 0.65) < 0.001
other 1'309 5 (5 to 6) 312 19 (15 to 24) 0.32 (0.27 to 0.38) < 0.001
Nursing hours [in hours] n median (25%; 75% quantiles) n median (25%; 75% quantiles) median difference (95% CI)  
Diseases of circulatory system 1'470 39.9 (20.3; 73.4) 758 119.2 (63.5; 226.4) 79.2 (70.1 to 88.4) <  0.001
Neoplasms 1'295 36.9 (21.3; 67.7) 380 101.2 (42.1; 192.6) 63.9 (48.3 to 79.5) <  0.001
Injury/poisoning of external cause 446 44.1 (24.8; 74.5) 256 102.9 (51.5; 195.8) 58.8 (42.2 to 75.5) <  0.001
Diseases of the digestive system 315 28.9 (19.6; 57.8) 101 100.2 (37.2; 326.3) 71.3 (25.1 to 117.5) 0.00255
Diseases of nervous system 242 27.9 (18.5; 45.5) 113 71.7 (37.6; 122.7) 43.9 (28.4 to 59.5) <  0.001
Infections/parasites 80 31.8 (17.2; 67.2) 78 128.2 (62.9; 298.3) 95.8 (74.1 to 117.6) <  0.001
Diseases of respiratory system 232 38.8 (19.4; 73.6) 59 66.5 (41.6; 120.3) 27.8 (18.2 to 37.3) <  0.001
other 1'309 25.1 (15.9; 46.1) 312 62.6 (29.0; 142.0) 37.6 (27.6 to 47.6) < 0.001
Cost [in thousand CHF] n median (25%; 75% quantiles) n median (25%; 75% quantiles) median difference (95% CI)  
Diseases of circulatory system 1'470 20.4 (11.6; 40.6) 758 48.3 (23.3; 79.7) 27.7 (23.0 to 32.4) < 0.001
Neoplasms 1'295 13.7 (7.2; 27.4) 380 35.3 (15.4; 63.7) 21.5 (17.8 to 25.3) < 0.001
Injury/poisoning of external cause 446 15.2 (9.0; 25.2) 256 34.9 (19.6; 67.7) 19.5 (15.6 to 23.4) < 0.001
Diseases of the digestive system 315 11.3 (6.8; 19.8) 101 31.0 (13.0; 90.0) 19.7 (9.7 to 29.7) < 0.001
Diseases of nervous system 242 10.9 (7.8; 18.3) 113 20.6 (13.5; 44.0) 9.8 (6.6 to 13.0) < 0.001
Infections/parasites 80 9.9 (6.1; 19.0) 78 35.4 (16.6; 97.4) 24.4 (18.1 to 30.7) < 0.001
Diseases of respiratory system 232 12.4 (7.6; 24.8) 59 18.8 (13.1; 29.8) 6.5 (4.2 to 8.7) < 0.001
other 1'214 9.2 (6.0; 15.9) 253 16.6 (9.0; 32.6) 7.4 (4.7 to 10.1) < 0.001
  1. Legend: ICU intensive care unit; LOS length of stay, missing values for LOS due to censoring are indicated with a dash (−),