Xiao 2008.

Methods	Randomised clinical trial with 2 arms: three dimensional conformal radiotherapy (3‐DCRT) plus transarterial chemoembolisation (TACE) versus TACE. Parallel‐group design
Participants	60 people with unresectable primary hepatic carcinoma. TACE + 3‐DCRT = 30; TACE = 30 Median age: not reported Male/female: 45/15 Recruitment: January 2002 to June 2006 Inclusion criteria: Chinese Medical Association guideline: KPS ≥ 70 Child‐Pugh class A or B I‐IIIa with no liver cancer metastasis
Interventions	TACE: femoral artery by Seldinger technique 3‐DCRT: total average dose = 55 Gy
Outcomes	Short‐term effects Survival rate Toxic and side effects
Notes	Country of the study: China We were unable to make a contact with the corresponding author to request missing data. Funding: unclear
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	Allocation sequence was generated by random table number.
Allocation concealment (selection bias)	Unclear risk	The method used to conceal the allocation was not described.
Blinding of participants and personnel (performance bias) All outcomes	High risk	The trial was not blinded, so that the allocation was known during the trial.
Blinding of outcome assessment (detection bias) All outcomes	Low risk	Outcome was assessed by apparatus.
Incomplete outcome data (attrition bias) All outcomes	Unclear risk	There were insufficient data to assess attrition bias.
Selective reporting (reporting bias)	High risk	The study did not report cancer‐related mortality, quality of life, or serious adverse events.
For profit bias	Unclear risk	Unclear funding source.
Other bias	Unclear risk	Unclear risk of other bias.