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Table 2 Support for inclusion of items in critical appraisal instruments for RCTs of conventional medicine.

From: Development and evaluation of an instrument for the critical appraisal of randomized controlled trials of natural products

General Item Categories Part of validated tool Empirical evidence
Participants yes  
Interventions Yes  
Objectives Yes  
Outcomes (Methods) Yes  
Sample size Yes  
Sequence generation (Randomization) Yes Yes
Allocation concealment
Blinding Yes Yes
Statistical flow Yes  
Participant flow Yes Yes
Baseline data Yes Yes
Numbers analyzed Yes  
Outcomes and estimation (Results) Yes  
Ancillary analysis Yes  
Adverse effects Yes  
Interpretation Yes  
Generalizability Yes