Table 3 Univariable and multivariable linear regression models for blood loss
Predictor variable | Univariable | Multivariable | ||
|---|---|---|---|---|
Pearson | P value | B(95% CI) | P value | |
Sex | 0.026 | 0.793 | ||
Age | −0.043 | 0.663 | ||
Height(cm) | −0.079 | 0.425 | ||
Weight(Kg) | −0.133 | 0.182 | ||
BMI | − 0.146 | 0.141 | ||
Segmental Cobb angle(°) | 0.373 | < 0.001* | 0.001(−0.002–0.003) | 0.596 |
Total Cobb angle(°) | 0.474 | < 0.001* | 0.003(0.000–0.005] | 0.046* |
Segmental kyphosis(°) | 0.085 | 0.396 | ||
Correction of segmental Cobb angle(%) | 0.022 | 0.829 | ||
Correction of total Cobb angle(%) | −0.081 | 0.417 | ||
Correction of segmental kyphosis/lordosis(%) | −0.084 | 0.400 | ||
The number of fused levels | 0.535 | < 0.001* | 0.036 (0.0147–0.054) | < 0.001* |
Resection of ribs (n(%)) | 0.140 | 0.159 | ||
Length of surgery(minute) | 0.333 | 0.001* | −1.262E-5 (−0.001–0.001) | 0.970 |
Preoperative Hemoglobin(g/l) | 0.010 | 0.921 | ||
Preoperative platelet count(*109) | −0.049 | 0.623 | ||
Preoperative PT(s) | 0.067 | 0.503 | ||
Preoperative APTT(s) | −0.053 | 0.594 | ||
Preoperative fibrinogen(g/l) | −0.057 | 0.570 | ||