Table 3 Linear regression analysis of risk factors for blood loss
From: Risk factors of total blood loss in the posterior surgery for patients with thoracolumbar metastasis
Univariate analysis | Multivariate analysis | |||
|---|---|---|---|---|
Regression Coefficient | P | Regression Coefficient | P | |
BMI (kg/m2) | ||||
Overweight | 74 | 0.706 | 172 | 0.340 |
Blood supply | ||||
Hypervascular | 683 | 0.001 | 529 | 0.017 |
Surgical method | ||||
Wide or marginal excision (piece-meal) | 735 | 0.030 | 641 | 0.059 |
Wide or marginal excision (en-bloc) | 1775 | < 0.001 | 2053 | < 0.001 |
Surgical site | ||||
Lower thoracic | −77 | 0.734 | 106 | 0.623 |
Lumbar | 191 | 0.408 | 470 | 0.033 |
Surgery segment | ||||
Multiple | −53 | 0.783 | 21 | 0.907 |
Extraosseous tumor mass | ||||
Yes | 446 | 0.035 | 513 | 0.012 |
Preoperative embolism | ||||
No | − 660 | 0.051 | − 159 | 0.666 |
PLT (109/L) | ||||
< 100 | 539 | 0.251 | 614 | 0.166 |