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*p < 0.05
**p < 0.001
BMI: Body mass index; MIS-TLIF: Minimally invasive transforaminal lumbar interbody fusion; OLLIF: Oblique lateral lumbar interbody fusion; SD: Standard deviation; TLIF: Transforaminal lumbar interbody fusion.
| Dependent Variable: Blood Loss (mL) | OLLIF | MIS-TLIF | TLIF |
| BMI | -0.827 | -2.21 | 5.389** |
| -1.977 | -5.073 | -1.813 | |
| F-Statistic | 3.619* (df = 4; 23) | 3.759** (df = 4; 63) | 21.016** (df = 4; 220) |
| R2 | 0.386 | 0.193 | 0.276 |
