Bunio 2004.

Methods	Study design: RCT Duration of study: 6 months
Participants	Country: Poland Setting: not reported Diagnostic criteria: not reported Time on HD: 38.7 ± 32.8 mo Number (included/randomised): 77/62 Mean age ± SD: 54 ± 13 years Sex (M/F): 40/37 Comorbidity: lipid disturbances
Interventions	Treatment group Hypolipaemic diet Control group Lovastatin: 20 mg/d
Outcomes	Bone specific alkaline phosphatase (U/L) iPTH (pmol/L)
Notes	Abstract only, unable to obtain full text Details of hypolipaemic diet were unclear Not included in the meta‐analyses
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Not reported
Allocation concealment (selection bias)	Unclear risk	Not reported
Blinding of participants and personnel (performance bias) All outcomes	Unclear risk	Not reported
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	Not reported
Incomplete outcome data (attrition bias) All outcomes	Unclear risk	Not reported
Selective reporting (reporting bias)	High risk	iPTH, bone specific alkaline phosphatase were listed in the methods, but no detailed information provided in the results
Other bias	Unclear risk	Insufficient information to permit judgement