After adjusting for covariant factors, including DM, age at the time of the study, BMI, and the mean serum albumin level (Figure 2B), the HR for peritonitis development was significantly higher in group 2 (HR = 1) than in group 4 (HR = 0.401, 95% CI 0.209 − 0.769) and the other 2 groups. This evidence concerns the gene ALB and diabetes mellitus.