Material and Method All patients 18 years of age and older who were treated with PD at the Istanbul Medical Faculty from October 1994 to October 2014 were included in the study. Patients exclude which follow-up shorter than 3 months and patients whose data were not available. From the day PD was started, all peritonitis data were collected prospectively in a large database. The data include Socio-demographic data, type of peritoneal dialysis, starting time and duration of every peritonitis episode, causative organisms and outcome of the peritonitis, which could be cure, change of PD catheter, transfer to hemodialysis, or death. The time in months from PD start to the first episode of peritonitis was computed.