Table 4 Results of the Univariable Analysis of Preoperative Factors for Potential Association with Blood Transfusion in anemia patients
Variable | Normal preoperative hemoglobin level | Mild anemia | Moderate anemia | ||||||
|---|---|---|---|---|---|---|---|---|---|
RC | OR (95% CI) | P value | RC | OR (95% CI) | P value | RC | OR (95% CI) | P value | |
BMI < 18.5 | 0.53 | 1.699 (1.200 2.405) | < 0.05 | − 0.14 | 0.868 (0.628 1.202) | 0.394 | − 0.67 | 0.513 (0.143 1.842) | 0.306 |
T3 orT4 stage | 0.45 | 1.572 (1.381 1.790) | < 0.05 | 0.36 | 1.434 (1.224 1.680) | < 0.05 | 0.22 | 1.245 (0.737 2.103) | 0.413 |
ASA III, IV grade | 0.52 | 1.677 (1.310 2.147) | < 0.05 | 0.49 | 1.625 (1.243 2.124) | < 0.05 | 1.52 | 4.557 (1.316 15.775) | < 0.05 |
Tumor localization | − 0.04 | 0.964 (0.890 1.043) | 0.361 | − 0.11 | 0.896 (0.817 0.982) | < 0.05 | − 0.11 | 0.896 (0.646 1.244) | 0.514 |
Free-flap | 0.42 | 1.515 (1.053 2.180) | < 0.05 | 0.09 | 1.092 (0.708 1.683) | 0.690 | 0.75 | 0.045 (0.005 0.373) | < 0.05 |
Osseous-flap | 0.43 | 1.539 (1.172 2.022) | < 0.05 | − 0.48 | 0.622 (0.451 0.858) | < 0.05 | − 3.10 | 2.108 (0.415 10.704) | 0.368 |