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Table 2 Postoperative delirium

From: The association between preoperative Mini-Cog© score and postoperative delirium (POD): a retrospective cohort study

  Delirium No delirium     
Number 20 (6.3%) 299 (93.7%)     
   Unadjusted Adjusted
  Median (IQR) Median difference p OR (95% CI) p
Age 81 (9) 71 (14) 10 < 0.001* 1.13 (1.06 to 1.22) 0.001
Anaerobic threshold 11.2 (2) 11.9 (4) 0.7 0.299*   
  n (%) OR (95% CI) p   
Sex
 Female 11 (55%) 125 (42%) 1.7 (0.69 to 4.22) 0.25**   
 Male 9 (45%) 174 (58%)   
ASA grade
 < 3 10 (50%) 202 (68%) 2.13 (0.86 to 5.28) 0.098** 0.82 (0.31 to 2.14) 0.69
 ≥ 3 10 (50%) 95 (32%)
Frailty
 Frail 3 (18%) 26 (9%) 2.18 (0.59 to 8.07) 0.209***   
 Not frail 14 (82%) 264 (91%)   
Mini-Cog© score
 Low 7 (35%) 45 (15%) 3.04 (1.15 to 8.03) 0.019** 0.49 (0.18 to 1.37) 0.17
 Normal 13 (65%) 254 (85%)
Type of surgery
 Laparoscopy 3 (15%) 95 (32%)   0.29**   
 Open 16 (80%) 193 (65%)    
 Converted 1 (5%)^ 11 (4%)    
  1. CI = confidence interval, IQR = interquartile range, OR = odds ratio. Bold = p < 0.1, bold + italics = p < 0.05
  2. *Mann-Whitney U
  3. **Chi-squared test
  4. ***Fisher’s exact test
  5. ^Expected cell count 0.75
  6. †Logistic regression