Understanding, Confidence and Usefulness of Effect Size and Certainty of Evidence: A Cross-Sectional Survey Among Australian Dietitians

Purpose: Interpreting treatment effect size is essential for evidence-informed dietetic care, yet understanding of this competency among dietitians remains unestablished. Methods: We conducted a web-based cross-sectional survey of Australian dietitians (October 2024-February 2025). The survey assessed their understanding of effect size, presented using three absolute estimates (risk difference [RD], risk in treatment vs risk in control groups, number needed to treat [NNT]) and two relative estimates (relative risk [RR], odds ratio [OR]). We also assessed their confidence in determining correct

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