Univariate logistic regression analysis revealed that age, sex, BMI, operation time, intraoperative blood loss, history of hypertension, history of diabetes, history of cerebrovascular disease, history of osteoporosis, TP, ALB, SAA, RBC, HB, HCT, and MCHC were associated with postoperative anemia in this cohort. This evidence concerns the gene ALB and osteoporosis.