Table 2.
Multivariate analysis of risk factors for postoperative delirium.
| Factor | B | S.E. | Wald | P value | OR | 95% CI |
|---|---|---|---|---|---|---|
| Age | 1.211 | 0.457 | 7.0366 | <0.01 | 3.358 | (1.372, 8.218) |
| ASA scale (II/III) | −0.960 | 1.698 | 0.320 | 0.57 | 0.383 | (0.014, 10.664) |
| Duration of anesthesia | 0.256 | 0.121 | 4.470 | 0.026 | 1.292 | (1.019, 1.637) |
| Postoperative serum melatonin levels | −0.703 | 0.357 | 3.873 | 0.038 | 0.495 | (0.246, 0.997) |
| Serum albumin levels | −0.282 | 0.525 | 0.289 | 0.591 | 0.754 | (0.270, 2.110) |
Abbreviations: S.E.: standard error; OR: odds ratio; CI: confidence interval; ASA, American Society of Anesthesiologists.