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Table 2 Description of sample of analysis

From: Acetylcholinesterase and butyrylcholinesterase in cardiosurgical patients with postoperative delirium

Characteristic Total sample (n = 217)
Age (years) [M (SD)] 65.4 (12.3)
Sex [n (%)]
 Male 155 (71.4)
 Female 62 (28.6)
Education [n (%)]
 No graduation 7 (3.2)
 Low graduation 89 (41.0)
 Middle graduation 52 (24.0)
 Polytechnic secondary school 28 (12.9)
 Higher graduation 21 (9.7)
 A-level 20 (9.2)
ASA-PS [n (%)]
 2 2 (0.9)
 3 201 (92.6)
 4 14 (6.5)
 LV-EF in % [M (SD)] 57.9 (13.4)
Anesthesia [n (%)]
 Balanced 217 (100.0)
 Pulmonary artery catheter 59 (28.5)
 NIRS 217 (100.0)
 TEE 169 (81.6)
 BIS 217 (100.0)
Operative procedure [n (%)]
 Coronary surgery 88 (40.6)
 Valve surgery (even multiple valves) 46 (21.2)
 Coronary and valve surgery 22 (10.1)
 Aorta ascendens replacement 2 (0.9)
 Valve surgery + aorta ascendens replacement 12 (5.5)
 Other combinations 35 (16.1)
 Other surgery 12 (5.5)
Intraoperative variables [M (SD)]
 Duration of anesthesia (min) 329.2 (81.1)
 Duration of surgery (min) 258.5 (79.1)
 Time of bypass (min) 123.2 (58.9)
 Duration of mechanical ventilation after surgery (min) [M (SD)] 334.5 (658.3)
 Duration of stay on the ICU (days) [M (SD)] 2.1 (2.8)
 Duration of stay in hospital (days) [M (SD)] 12.6 (6.2)
  1. Abbreviation: M mean, SD standard deviation, n number of patients, % percent, min minutes. ASA risk score American Society of Anesthesiologists, LVEF left ventricular ejection fraction, NIRS near infrared spectrometry,TEE transesophageal echocardiography, BIS bispectral index)