Table 3 Univariate analysis of the nondelirium group and delirium group in the training set (intraoperative factors)
From: Prediction model for delirium in patients with cardiovascular surgery: development and validation
Variable | Total | Non-delirium group | Delirium group | \(\chi ^{2}\)/t | P |
|---|---|---|---|---|---|
n(%)/\({\bar{x}} \pm s\) | n(%)/\({\bar{x}} \pm s\) | n(%)/\({\bar{x}} \pm s\) | |||
Type of surgery | 17.479 | 0.004* | |||
CABG | 96 (24.7) | 57 (28.6) | 39 (20.5) | ||
Valve replacement or shaping | 185 (47.6) | 89 (44.7) | 96 (50.5) | ||
Aortic valve replacement or shaping | 18 (4.6) | 5 (2.5) | 13 (6.8) | ||
Heart tumor removal | 10 (2.6) | 10 (5.0) | 0 (0.0) | ||
Congenital correction | 23 (5.9) | 12 (6.0) | 11 (5.8) | ||
Two kinds of surgery and above | 57 (14.7) | 26 (13.1) | 31 (16.3) | ||
CPB duration | 98.8 ± 73.3 | 83.5 ± 65.7 | 114.8 ± 77.5 | −4.292 | <0.001* |
Intraoperative minimum MAP | 41.1 ± 11.2 | 42.8 ± 11.3 | 39.3 ± 10.8 | 3.138 | 0.002* |
Intraoperative blood transfusion | 72 (18.5) | 26 (13.1) | 46 (24.2) | 8.005 | 0.005* |