Table 3 Univariate regression analysis of the relationships between variables and the postoperative drainage volume
Variables | β (SE) | t | P | R2 |
|---|---|---|---|---|
Age (years) | 0.009 (0.213) | 0.100 | 0.920 | 0.000 |
Sex | 0.061 (48.631) | 0.663 | 0.508 | 0.004 |
BMI (kg/m2) | 0.054 (3.142) | 0.581 | 0.562 | 0.003 |
Hypertension | − 0.012 (33.179) | −0.224 | 0.823 | 0.000 |
Anesthesia (SA vs GA) | 0.100 (27.905) | 1.087 | 0.279 | 0.010 |
Operative time (min) | 0.305 (1.339) | 3.465 | 0.001 | 0.093 |
Postoperative MAP (mmHg) | −0.102 (1.294) | −1.109 | 0.270 | 0.010 |
Hemoglobin (g/mm3) | −0.047 (10.497) | −0.505 | 0.614 | 0.002 |
Platelet (×103/mm3) | 0.028 (0.204) | 0.299 | 0.766 | 0.001 |
Lumbar spine status (normal vs low) | −0.027 (25.913) | −0.287 | 0.775 | 0.001 |
Femoral neck status (normal vs low) | −0.032 (33.168) | −0.350 | 0.727 | 0.001 |
Trochanter status (normal vs low) | −0.219 (25.150) | −2.423 | 0.017 | 0.048 |
Total hip status (normal vs low) | −0.277 (25.075) | −3.124 | 0.002 | 0.077 |