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