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Table 2 Classification scheme of bias in RCTs [[22]]

From: Developing evidence-based dentistry skills: how to interpret randomized clinical trials and systematic reviews

Type of bias Prevention/elimination of bias
• Selection bias Proper randomization
• Performance bias Blinding of participants and people administering treatment
• Detection bias Blinding of outcome assessors/analyzers
• Attrition bias Blinding participants, intention-to-treat analysis
• Publication bias Trial registration, no selective reporting
• Other biases No selective reporting, meticulous study design