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
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) | Â |
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) | Â |
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) | Â |
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) | Â |
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) | Â |
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 |