Thervet 2008.

Methods	Study design: open‐label, parallel RCT Study duration: January 2006 to September 2006 Duration of follow‐up: 12 months
Participants	Country: France Setting: not reported Inclusion criteria: kidney transplant recipients; vitamin D < 30 ng/mL; calcium < 35 mmol/L Number: treatment group 1 (23); treatment group 2 (26) Mean age ± SD (years): not reported Sex (M/F): not reported Exclusion criteria: not reported
Interventions	Treatment group 1 Cholecalciferol: 100,000 U every 2 months, initiated at 4 months post transplant Treatment group 2 Cholecalciferol: 100,000 U every 2 months, initiated at 6 months post transplant Co‐interventions Not reported
Outcomes	Vitamin D PTH GFR Adverse events
Notes	Abstract‐only publication; outcomes of interest not reported; no full‐text publication identified after 10 years 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	Open‐label study
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	Insufficient information to permit judgement
Incomplete outcome data (attrition bias) All outcomes	Unclear risk	Insufficient information to permit judgement
Selective reporting (reporting bias)	High risk	Data unable to be meta‐analysed
Other bias	Unclear risk	Insufficient information to permit judgement