ALB and hemorrhagic disease: When controlling for preoperative functional health status, history of a bleeding disorder, preoperative dialysis, mFI-5, ASA, preoperative albumin level, preoperative HCT level, preoperative WCC, operative time, fusion procedure (vs. decompression only), and perioperative transfusion, unplanned surgery (β 2.7 [95% CI 1.97 to 3.43]; p < 0.001) was found to independently predict length of hospital stay (Table 5).