Table 8.
Demographic data, anaesthesia method and effect of preoperative risk factors on delirium development
| Wald statistics | p | OR | 95% Confidence intervals | ||
|---|---|---|---|---|---|
| Lower limit | Upper limit | ||||
| Age | 24.185 | <0.001 | 1.087 | 1.052 | 1.124 |
|
| |||||
| ASA score | 20.267 | <0.001 | 3.335 | 1.974 | 5.633 |
|
| |||||
| Duration of operation | 11.748 | 0.001 | 1.005 | 1.002 | 1.008 |
|
| |||||
| Gender (M/F) | 2.816 | 0.093 | 1.736 | 0.912 | 3.304 |
|
| |||||
| Heart disease (None/Yes) | 0.050 | 0.824 | 0.919 | 0.435 | 1.939 |
|
| |||||
| Diabetes mellitus (None/Yes) | 7.972 | 0.005 | 2.736 | 1.360 | 5.501 |
|
| |||||
| COPD (None/Yes) | 4.527 | 0.033 | 2.314 | 1.068 | 5.011 |
|
| |||||
| HT (None/Yes) | 2.649 | 0.104 | 0.581 | 0.302 | 1.117 |
|
| |||||
| Premedication (None/Yes) | 3.173 | 0.075 | 0.539 | 0.273 | 1.064 |
|
| |||||
| (General/Regional) | 4.788 | 0.029 | 2.676 | 1.108 | 6.461 |
|
| |||||
| Malignancy diagnosis (None/Yes) | 0.758 | 0.384 | 1.389 | 0.663 | 2.913 |
M: male; F: female; ASA: American Society of Anaesthesiologists; COPD: chronic obstructive pulmonary disease; HT: hypertension; OR: odds ratio. The relationship of risk factors with delirium development was analysed using logistic regression.