Kim 2006a.

Methods	Study design: parallel RCT Study duration: March 2001 and February 2003 Duration of follow‐up: 60 days
Participants	Setting: single centre Country: Korea Participants requiring a temporary catheter while waiting for placement and maturation of an AV fistula or graft Number (participants/catheters): treatment group (60/60); control group (60/60) Mean age ± SD (years): treatment group (53.68 ± 15.201); control group (56.18 ± 15.684) Sex (M/F): treatment group (33/27); control group (28/32) Exclusion criteria: already had an infection; under antibiotic therapy
Interventions	Treatment group Cefazolin: 10 mg/mL Gentamicin: 5 mg/mL Heparin: 1000 U/mL Control group Heparin: 1000 U/mL
Outcomes	CRI
Notes	Funding source: not reported
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	Block randomizations method was made using table of random number
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	High risk	Researchers assessed the outcomes were not blinded
Incomplete outcome data (attrition bias) All outcomes	Low risk	All analyses were performed on an intention‐to‐treat basis
Selective reporting (reporting bias)	Low risk	Describes the outcome according to protocol
Other bias	Unclear risk	Funding source not reported