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Table 1 Clinical and surgical summary of patients with and without delirium

From: Delirium in postoperative nonventilated intensive care patients: risk factors and outcomes

Variable All patients (n = 465) Delirium (n = 43) Non-delirium (n = 422)
Gender (M:F) 1.1:1   
Age, yr (IQR) 60 (47–74) 73 (60–82) 59 (46–73) *
Apache II score (IQR) 10 (6–13) 13 (11–17) 10 (6–13) *
APS (IQR) 7 (3–10) 9 (6–11) 7 (2–10) *
Patients comorbidities    
Diabetes mellitus (%) 51 (11%) 5 (11%) 46 (9.9%)
Hypertension (%) 138 (29.7%) 12 (27%) 126 (27.1%)
Chronic pulmonary disease (%) 13 (2.8%) 0 13 (2.8%)
Cancer (%) 30 (6.45%) 3 (6.5%) 27 (5.8%)
Chronic renal disease (%) 6 (1.3%) 1 (2%) 5 (1.1%)
Dementia (%) 7 (1.5%) 5 (11%) 2 (0.4%) *
Site of surgery    
Abdominal (%) 192 (41.3%) 15 (34.0%) 177 (42.0%)
Orthopedic (%) 96 (20.6%) 9 (20.9%) 87 (20.6%)
Head and neck (%) 38 (8.2%) 5 (11.6%) 33 (7.8%)
Urologic (%) 35 (7.5%) 2 (4.8%) 33 (7.8%)
Vascular (%) 35 (7.5%) 2 (4.8%) 33 (7.8%)
Thoracic (%) 24 (5.2%) 1 (2.4%) 23 (5.6%)
Cardiac (%) 19 (4.1%) 2 (4.8%) 17 (4%)
Trauma (%) 18 (3.9%) 7 (16.3%) 11 (2.6%) *
Gynecological (%) 8 (1.7%) 0 8 (1.9%)
Emergency surgery (%) 127 (27.3%) 34 (78%) 93 (22%) *
Outcomes    
In-hospital length of stay (IQR) 7 (4–14) 26 (12–39) 6 (3–13) *
In-hospital mortality (%) 24 (5.2%) 7 (16.3%) 17 (4.0%) *
SICU length of stay (IQR) 2 (1–4) 6 (3–13) 2 (1–3) *
SICU mortality (%) 9 (1.7) 3 (6.5%) 6 (1.7%) *
  1. M/F, male/female; APS, Acute Physiologic Score; IQR, interquartile range. *p < 0.05.