ALB and Parkinson disease: Univariate analysis showed that age, sex, comorbidity, coronary heart disease, stroke, Parkinson’s disease, white blood cell (WBC) count, neutrophil count, monocyte lymphocyte ratio (MLR), neutrophil lymphocyte ratio (NLR), hemoglobin, albumin, AGR, serum creatinine, blood urea nitrogen, ASA classification, intraoperative blood loss, ICU admission, and length of hospital stay were positively correlated with the incidence of POP (Table 2).