Fig. 2

A–D Multivariable regression analysis of studied risk factors associated with human albumin administration in patients undergoing THA with Pre-ALB < 35 g/L (A), patients undergoing THA with Pre-ALB ≥ 35 g/L (B), patients undergoing TKA with Pre-ALB < 35 g/L (C), and patients undergoing TKA with Pre-ALB ≥ 35 g/L (D). The results are shown as odds ratios with 95% confidence intervals. * indicates a significant difference after Bonferroni correction. AS, ankylosing spondylitis; ASA, American Society of Anesthesiologists; BMI, body mass index; DDH, development dysplasia of hip; HF, hip fracture; OA, osteoarthritis; ONFH, osteonecrosis of femoral head; Pre-ALB, preoperative albumin; RA, rheumatoid arthritis; THA, total hip arthroplasty; TKA, total knee arthroplasty