Table 3.
Univariate analysis of the variables
| Variable | B | SE | Wals | df | p valve | OR | 95% CI for exp (B) OR |
|
|---|---|---|---|---|---|---|---|---|
| Lower | Upper | |||||||
| Age | 0.086 | 0.033 | 6.727 | 1 | 0.009 | 1.090 | 1.021 | 1.163 |
| Hospitalization | 0.101 | 0.025 | 15.958 | 1 | 0.000 | 1.106 | 1.053 | 1.162 |
| Gender | 0.207 | 0.454 | 0.207 | 1 | 0.649 | 1.229 | 0.505 | 2.992 |
| Hypertension | 0.388 | 0.454 | 0.730 | 1 | 0.393 | 1.474 | 0.605 | 3.590 |
| Diabetes | − 1.110 | 0.466 | 5.664 | 1 | 0.017 | 0.330 | 0.132 | 0.822 |
| Coronary heart disease | 0.408 | 0.505 | 0.652 | 1 | 0.419 | 1.504 | 0.559 | 4.408 |
| Cerebral infarction | 0.448 | 0.603 | 0.551 | 1 | 0.458 | 1.564 | 0.480 | 5.099 |
| Albumin infusion | 0.050 | 0.021 | 5.411 | 1 | 0.020 | 1.051 | 1.008 | 1.096 |
| Preoperative Hospitalization | 0.146 | 0.093 | 2.440 | 1 | 0.118 | 1.157 | 0.964 | 1.388 |
| Preoperative HCT | − 0.015 | 0.068 | 0.047 | 1 | 0.828 | 0.985 | 0.863 | 1.125 |
| Postoperative HCT | − 0.022 | 0.81 | 0.073 | 1 | 0.787 | 0.978 | 0.835 | 1.146 |
| BMI | − 0.085 | 0.072 | 1.398 | 1 | 0.237 | 0.919 | 0.799 | 1.057 |
| Blood transfusion volume | − 0.172 | 0.182 | 0.892 | 1 | 0.345 | 0.842 | 0.589 | 1.203 |
| Preoperative leucocyte count | 0.163 | 0.100 | 2.267 | 1 | 0.105 | 1.177 | 0.967 | 1.432 |
| Preoperative albumin | − 0.050 | 0.079 | 0.401 | 1 | 0.526 | 0.951 | 0.815 | 1.110 |
| Preoperative TP | − 0.016 | 0.051 | 0.105 | 1 | 0.746 | 0.984 | 0.890 | 1.087 |
| NYHA | 0.543 | 0.323 | 2.825 | 1 | 0.093 | 1.722 | 0.914 | 3.245 |
| ASA | 1.555 | 0.446 | 12.141 | 1 | 0.000 | 4.735 | 1.975 | 11.355 |
| Anesthesia | − 0.107 | 0.462 | 0.054 | 1 | 0.817 | 0.899 | 0.363 | 2.224 |
| Operation | − 0.111 | 0.479 | 0.053 | 1 | 0.817 | 0.895 | 0.350 | 2.287 |
| The operation time | 0.014 | 0.013 | 1.162 | 1 | 0.281 | 1.014 | 0.989 | 1.040 |
| The anesthesia time | 0.016 | 0.010 | 2.511 | 1 | 0.113 | 0.984 | 0.965 | 1.004 |
| Intraoperative blood loss | 0.006 | 0.003 | 3.522 | 1 | 0.061 | 1.006 | 1.000 | 1.013 |
| Postoperative Na+ | 0.063 | 0.055 | 1.313 | 1 | 0.252 | 0.939 | 0.843 | 1.046 |
| Postoperative K+ | 0.038 | 0.449 | 0.007 | 1 | 0.932 | 0.962 | 0.399 | 2.321 |
| Postoperative leucocyte count | 0.007 | 0.099 | 0.004 | 1 | 0.947 | 1.007 | 0.829 | 1.223 |
| Postoperative Hb | 0.160 | 0.224 | 0.515 | 1 | 0.473 | 1.174 | 0.758 | 1.820 |
| DVT | 0.338 | 0.516 | 0.428 | 1 | 0.513 | 1.402 | 0.509 | 3.856 |
ASA American Society of Anesthesiologists, NYHA New York Heart Association, BMI body mass index, DVT deep venous thrombosis, HCT hematocrit, Hb hemoglobin, TP total protein, CI confidence interval, OR odds ratio, SE standard error