Table 5

Risk of bias assessment for clinical studies

Author, Year Random Sequence Generation Allocation Concealment Blinding of Participants and Personnel Blinding of Outcome Assessors Incomplete Outcome Data Addressed Selective Reporting Conflicts of Interest Funding Sample Size Calculation
Andtbacka, 201513 Low RiskLow RiskHigh RiskLow RiskLow RiskLow RiskHigh RiskHigh RiskLow Risk
Long, 201516 High RiskHigh RiskHigh RiskUnclearLow RiskLow RiskHigh RiskHigh RiskUnclear
Puzanov, 201617 High RiskHigh RiskHigh RiskUnclearLow RiskLow RiskHigh RiskHigh RiskUnclear
Chang, 201219 High RiskHigh RiskHigh RiskUnclearLow RiskLow RiskHigh RiskHigh RiskUnclear
Harrington, 201018 High RiskHigh RiskHigh RiskUnclearLow RiskLow RiskHigh RiskHigh RiskUnclear
Senzer, 200915 High RiskHigh RiskHigh RiskUnclearLow RiskHigh RiskHigh RiskHigh RiskUnclear
Hu, 200614 High RiskHigh RiskHigh RiskUnclearLow RiskUnclearHigh RiskHigh RiskUnclear