Skip to main content

Table 2 Demographic characteristics of potential confounders for patients with or without POD

From: Incidence change of postoperative delirium after implementation of processed electroencephalography monitoring during surgery: a retrospective evaluation study

 

POD, N (%)

P-value

Control group

7258 (100)

Case group

60 (100)

 

Intraoperative pEEG

   

Yes

3397 (46.80)

14 (23.33)

< 0.001

No

3861 (53.20)

46 (76.67)

 

Age, mean ± SD

57.07 ± 15.62

74.32 ± 10.80

< 0.001

<45

1550 (21.36)

1 (1.67)

< 0.001

45–59

2229 (30.71)

6 (10.00)

 

60–74

2496 (34.39)

17 (28.33)

 

≥75

983 (13.54)

36 (60.00)

 

Sex

   

Male

3299 (45.45)

31 (51.67)

0.336

Female

3959 (54.55)

29 (48.33)

 

Formula

   

I (morphine)

3901 (53.75)

48 (80.00)

0.002

II (morphine + keto)

3222 (44.39)

12 (20.00)

 

III (fentanyl)

109 (1.50)

0 (0.00)

 

IV (fentanyl + keto)

12 (0.17)

0 (0.00)

 

V (morphine + ketamine)

14 (0.19)

0 (0.00)

 

ASA classification

   

<3

2862 (39.43)

7 (11.67)

< 0.001

≥3

4396 (60.57)

53 (88.33)

 

Emergency

373 (5.14)

9 (15.00)

0.004

  1. *P-value was derived from Pearson’s chi-square test and Fisher’s exact test, when the expected value was less than five, for categorical variables and Student’s t-test for continuous variables
  2. POD, postoperative delirium; pEEG, processed electroencephalography; ASA, American Society of Anesthesiologists
Back to article page

BMC Anesthesiology

ISSN: 1471-2253

Contact us