Park 1998.

Methods	Study design: parallel RCT Study time frame/recruitment period: April 1991 to January 1995 Follow‐up period: 2 years
Participants	Country: Korea Setting: single centre Patients commencing CAPD Number: treatment group (30); control group (29) Mean age, range (years): treatment group (47.8, 16 to 69); control group (46.2, 27 to 71) Sex (M/F): treatment group (19/11); control group (17/12) Diabetes: treatment group (13/30); control group (13/29) Exclusion criteria: not reported
Interventions	Treatment group Buried catheter Catheter tip buried for 6 weeks before being exteriorised. Bag exchange commenced the same day Control group Non‐buried catheter Tip was brought to the surface at the time of surgery and 6 weeks were allowed for wound healing before bag exchange Other information Double cuff Swan neck bent catheter was used in all patients
Outcomes	Peritonitis: defined as turbid peritoneal effluent with leukocyte count > 100/mm3 Exit‐site infection, total number: defined as skin over the tunnel red, war, tender and/or if purulent discharge was observed Peritonitis rate Exit‐site infection rate Death
Notes	Funding source: not reported
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Insufficient information to permit judgement
Allocation concealment (selection bias)	Unclear risk	Insufficient information to permit judgement
Blinding of participants and personnel (performance bias) All outcomes	High risk	Not blinded
Blinding of outcome assessment (detection bias) All outcomes	High risk	Not blinded
Incomplete outcome data (attrition bias) All outcomes	Low risk	2% dropout (1/60)
Selective reporting (reporting bias)	High risk	Not all the outcomes were reported
Other bias	Unclear risk	Insufficient information to permit judgement