Multiple logistic regression analysis was performed for eight variables (such as age, body weight, body height, history of diabetes mellitus, APACHE II scores, admission categories of post-operative patients without sepsis and trauma, and serum albumin), and the result showed that only age is an independent risk factor for ARC (OR, 0.95; 95 % CI, 0.91–0.98) (Table 2). This evidence concerns the gene ALB and diabetes mellitus.