This article, titled “Development and validation of the S-TIMHSS: a quality metric to inform and evaluate interventions to (re)build trust,” introduces a crucial new tool for healthcare professionals and policymakers. Authored by Samantha B. Meyer, Jerrica Little, Paul R. Ward, Patrick Brown, and Michael Calnan, and published on April 30, 2025, in Frontiers in Public Health, the paper addresses the vital need for effective measures of trust in healthcare. The authors emphasize that public acceptance of health messaging, recommendations, and policy is heavily dependent on trust in doctors, health systems, and health policy. The erosion of this trust is a significant public health concern, as it can lead to the public disregarding official health recommendations and negatively influencing population health. Trust has been shown to be associated with beneficial health behaviors, fewer symptoms, and higher quality of life, making its measurement and restoration a priority.
To address this, the Shortened Trust in Multidimensional Health System Scale (S-TIMHSS) was developed as an 18-item scale to measure trust across three critical dimensions: doctors, the health system, and health policy. This new scale is a direct response to limitations of the original 38-item Trust in Multidimensional Health System Scale (TIMHSS), which, despite being the first to combine these three dimensions, was burdensome for respondents and analysts and did not allow for direct aggregation of results into a total trust score. The development of the S-TIMHSS involved survey data collection from 512 participants in September 2024, employing various statistical criteria and content validity ratio (CVR) to reduce the number of items. The S-TIMHSS is highly practical, enabling direct scoring of trust items for applied research and can be completed in under 3 minutes, significantly reducing respondent and analyst burden. Crucially, the S-TIMHSS preserves the content, convergent, and criterion validity of its longer predecessor. It demonstrates strong internal consistency with a total omega (ωt) of 0.96 and hierarchical omega (ωh) of 0.88, confirming its reliability. The scale’s validity is further supported by its ability to predict attitudes and behaviors such as following doctor recommendations, vaccine acceptance, seeking necessary medical care, and truthful disclosure of information. The study also found that the S-TIMHSS exhibits equal test validity between individuals who identify as women and those who do not, indicating its robustness across these demographic groups.
The authors recommend the S-TIMHSS be used by health policy makers and practitioners as a quality metric. Its application can inform and evaluate interventions aimed at (re)building trust in healthcare, monitor patient trust in clinical settings, serve as a baseline for understanding patient trust, and guide health policy by addressing structural determinants of trust. Ultimately, this tool plays a vital role in addressing the complex social problem of declining trust in healthcare, fostering evidence-based strategies for interventions, and improving patient outcomes.
Reference: Meyer, S. B., Little, J., Ward, P. R., Brown, P., & Calnan, M. (2025). Development and validation of the S-TIMHSS: A quality metric to inform and evaluate interventions to (re)build trust. Frontiers in Public Health, 13, 1568836. https://doi.org/10.3389/fpubh.2025.1568836
