Meta-Analysis
Copyright ©The Author(s) 2015.
World J Meta-Anal. Jun 26, 2015; 3(3): 163-180
Published online Jun 26, 2015. doi: 10.13105/wjma.v3.i3.163
Table 8 Risk assessment of Ji Hong 2011 study
BiasAuthors' judgementSupport for judgement
Random sequence generation (selection bias)Low riskQuote: Use the random number table to get the allocation sequence
Comment: Probably done
Allocation concealment (selection bias)UnclearQuote: Not mentioned
Comment: Unclear
Blinding of participants and personnel (performance bias)UnclearQuote: Not mentioned
All outcomesComment: Unclear
Blinding of outcome assessment (detection bias)Low riskQuote: Not mentioned
All outcomesComment: The response rate is an objective parameter. Subjective judgement can not influent the result
Incomplete outcome data (attrition bias)Low riskQuote: 7 participants in 53 randomized lost to follow-up
All outcomesComment
Selective reporting (reporting bias)Low riskThe primary outcome listed in the method section are all reported
Comment: Probably done
Other biasUnclearThe study did not use the intention to treat strategy to analyze the result