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Table 3 Demographic characteristics of study population (n = 1874)

From: Is hyperlipidemia a potential protective factor against intraoperative awareness in cardiac surgery?

Characteristic No awareness or possible awareness Confirmed awareness P Value
Age-no. (%) 0.026*
  < 60 year old 1137 (60.7) 36 (1.9)
  > 60 year old 691 (36.9) 10 (0.5)
Male-no. (%) 1212 (66.3) 33 (73.9) 0.28
Height-cm 165.7 ± 8.7 166.1 ± 8.1 0.80
Weight-kg 68.0 ± 12.4 67.7 ± 12.9 0.88
BMI 24.8 ± 6.5 24.4 ± 3.7 0.67
Blood group-no. (%) 0.34
 A 511 (28.1) 16 (34.8)
 B 607 (33.4) 18 (39.1)
 AB 188 (10.4) 2 (4.3)
 O 510 (28.4) 10 (21.7)
Existing risk factors-no. (%)
 Smoking 824 (45.1) 21 (47.8) 0.72
 Alcohol consumption 236 (12.9) 5 (10.9) 0.68
 Hypertension 860 (47.1) 15 (32.6) 0.052
 Hyperlipidemia 705 (38.6) 11 (23.9) 0.043*
 Diabetes mellitus 342 (18.7) 6 (13.0) 0.33
 Chronic kidney disease 13 (0.7) 1 (2.2) 0.30
 Chronic liver disease 21 (1.2) 0 (0) 1.00
 Cerebrovascular events 39 (2.1) 1 (2.2) 1.00
 Chronic obstructive pulmonary disease 43 (2.4) 0 (0) 0.62
 History of general anesthesia 411 (22.5) 6 (13.0) 0.13
 History of cardiac infarction 320 (17.5) 7 (15.2) 0.68
 ASA status-no. / total no. (%) 0.48
  I 11 (0.61) 1 (2.2)
  II 533 (29.5) 16 (34.8)
  III 1167 (64.5) 27 (58.7)
  IV 97 (5.4) 2 (4.3)
 NYHA grade 0.53
  Lower than Grade 1 510 (27.9) 9 (20.0)
  Grade 1 177 (9.7) 7 (15.2)
  Grade 2 779 (42.7) 21 (45.7)
  Grade 3 340 (18.6) 9 (20.0)
  Grade 4 20 (1.1) 0 (0)
 Ejection fraction (%) 61.2 ± 8.7 62.3 ± 7.6 0.40
Duration of surgery-min 225.2 ± 82.4 195.0 ± 52.0 0.013*
Cardiopulmonary Bypass-no. (%) 1321 (72.3) 30 (68.2) 0.95
Duration of CPB-min 106.2 ± 47.4 91.2 ± 40.0 0.071
Aortic clamping time-min 71.7 ± 32.1 62.6 ± 33.3 0.11
  1. Plusminus values are means ± SD
  2. Abbreviations: BMI denotes body-mass index, ASA denotes American Society of Anesthesiologists, NYHA grade denotes New York Heart Association grade, CPB is cardiopulmonary bypass