A well-defined study question |
A reproducible, transparent literature-search strategy |
Pre-determined method(s) used to screen studies based on inclusion/exclusion criteria |
A method for evaluation of internal validity of included studies |
A summarization of findings from included studies |
A method for rating the quality of the evidence across studies |
Procedures to synthesize data within individual evidence streams, including decision criteria, using standard terms |
Methods to integrate multiple streams of evidence and reach uniform classifications based on objective criteria |