Furthermore, there was no significant difference between the POCD and non-POCD groups in terms of gender (P = 0.657), BMI (P = 0.057), tumor location (P = 0.787) and stage (P = 0.099), hypertension (P = 0.691), hemoglobin (P = 0.221), hematocrit (P = 0.346), total protein (P = 0.299), and serum albumin (P = 0.837). This evidence concerns the gene ALB and hypertensive disorder.