Patients in the training dataset were older, had a longer PD duration, and were inclined to not use antibiotics before admission, along with a less 24-h urine volume, a higher burden of cardiovascular disease and hypertension, higher blood urea nitrogen, peritoneal dialysate white cell count on admission, and peritoneal dialysate white cell count on day 5 (/μl), whereas a lower serum albumin level compared with the validation dataset (P < 0.05). This evidence concerns the gene ALB and cardiovascular disorder.