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Table 1 Patient demographics and intraoperative data of patients with and without postoperative delirium

From: Incidence and factors associated with postoperative delirium in patients undergoing transurethral resection of bladder tumor

  POD (−) (n = 298) POD (+) (n = 26) p value
Age (years) 75.0 [69.0, 80.0] 81.0 [76.0, 84.0] 0.0003
Sex: male 237 (79.5) 24 (92.3) 0.19
Body mass index (kg/m2) 23.5 [21.3, 25.8] 22.6 [19.8, 24.8] 0.062
Preexisting medical conditions
 Hypertension 169 (56.7) 14 (53.8) 0.83
 Ischemic heart disease 266 (89.3) 21 (80.8) 0.19
 Symptomatic stroke 43 (14.4) 5 (19.2) 0.56
 Diabetes 87 (29.2) 7 (26.9) 1
Pulmonary function    0.16
 Normal 182 (61.0) 12 (46.1)  
 Obstructive lung disease 84 (28.2) 12 (46.2)  
 Restrictive lung disease 32 (10.7) 2 (7.7)  
Plasma albumin (g/dL) 4.2 [4.0, 4.4] 4.1 [3.8, 4.3] 0.14
Plasma creatinine (mg/dL) 0.91 [0.76, 1.15] 0.89 [0.82, 1.09] 0.82
ASA-PS    0.79
 1 or 2 54 (18.1) 5 (19.2)  
 3 244 (81.9) 21 (80.8)  
5-ALA 141 (47.3) 12 (46.2) 1
Intraoperative data
Anesthetics    0.37
 Inhalation agents 284 (95.3) 24 (92.3)  
 Propofol 14 (4.6) 2 (7.6)  
Intraoperative hypotension 49 (16.4) 4 (15.4) 1
Duration of anesthesia (min) 104 [84, 130] 120 [95, 144] 0.08
  1. Median [first quartile, third quartile] or number (%)
  2. POD postoperative delirium, ASA-PS American Society of Anesthesiologists physical status, 5-ALA 5-amino levulinic acid