⊕⊕⊕⊕High: This research provides a very good indication of the likely effect. The likelihood that the effect will be substantially different† is low.⊕⊕⊕◯Moderate: This research provides a good indication of the likely effect. The likelihood that the effect will be substantially different† is moderate⊕⊕◯◯Low: This research provides some indication of the likely effect. However, the likelihood that it will be substantially different† is high.⊕◯◯◯Very low: This research does not provide a reliable indication of the likely effect. The likelihood that the effect will be substantially different† is very high.
*This concept is also called ‘quality of the evidence’ or ‘confidence in effect estimates’.† Substantially different: a large enough difference that it might affect a decision.
