Evaluation of the psychometric properties of self-reported weight stigma measures: A systematic literature review

<p dir="ltr">Objective: Conceptualisation and measurement of weight stigma varies across available studies assessing those affected. This paper aims to systematically review the psychometric properties of available self-reported measures of weight stigma. </p><p dir="ltr">Method: Studies exploring the development and/or validation of weight stigma measures were identified through systematically searching Medline, CINAHL, PsycINFO, Embase, Web of Science, and Scopus databases. The Consensus-based Standards of Health Measurement Instruments (COSMIN) checklist was used to assess the psychometric properties of measures. </p><p dir="ltr">Results: Thirty-six articles, reporting 18 different weight stigma measures, were included. For most included measures, measure development and content validity have not been assessed/reported. Structural validity, internal consistency, and hypothesis testing were the most commonly assessed/reported psychometric properties. High-quality ratings were given only for these properties. Most measures were rated as “indeterminate” and received an overall quality rating of “Very Low” as results were based on limited evidence. </p><p dir="ltr">Conclusions: Psychometric properties for published weight stigma measures have rarely been assessed/reported. The observed poor methodological quality for measure development, and limited content validity evidence, negatively impact the quality of evidence for the measures. There is a need for studies assessing the psychometric properties of existing weight stigma measures using COSMIN guidelines, and for a well-designed weight stigma measure informed by both theory and research.</p>