Ouyang 2015.

Methods	Study design: parallel RT Study time frame/recruitment period: November 2007 to August 2008 Follow‐up period: 24 months
Participants	Country: China Setting: single centre All ESKD patients ≥ 18 years who underwent a first PD catheter placement Number: treatment group (90); control group (99) Mean age ± SD (years): treatment group (50.3 ± 14.1); control group (49.1 ± 15.6) Sex (M/F): treatment group (49/41); control group (54/45) Diabetes: not reported Exclusion criteria: AKI; referral for kidney transplantation evaluation within 3 months; acute heart failure; acute MI within 3 months; acute respiratory distress syndrome at the time of enrolment; malignant disease; psychiatric disease
Interventions	Treatment group Coiled tip Tenckhoff Catheter Control group Straight tip Tenckhoff catheter Other information All placements were performed by one of two designated experienced nephrologists A prophylactic 2nd or 3rd‐generation cephalosporin was administered intravenously 1 hour before the catheter placement procedure Patients underwent PD therapy immediately after the successful catheter placement and transited to continuous ambulatory PD 7 days later
Outcomes	1‐year and 2‐year catheter survival Death, transfer to HD, kidney transplantation, refusal of PD therapy, or recovery of kidney function Catheter dysfunction Peritonitis diagnosed when two of the following conditions were present: abdominal pain; cloudy effluent with an effluent white cell count of more than 100/μL (≥ 50% polymorphonuclear neutrophils); or a positive effluent culture Exit‐site infection: defined as erythema with or without skin induration and purulent discharge from the exit site
Notes	Additional data requested from authors 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	Unclear risk	Insufficient information to permit judgement
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	Insufficient information to permit judgement
Incomplete outcome data (attrition bias) All outcomes	High risk	22% dropout (43/189)
Selective reporting (reporting bias)	Low risk	All the outcomes were reported
Other bias	Unclear risk	Insufficient information to permit judgement