Primary Care Service Provision Scale for Evaluating the Right to Health Among International Migrant Populations

<b>Introduction:</b> This study was conducted from July 2021 to December 2022. We propose a scale to measure the right to health among international migrants in primary care settings. The scale aims to highlight and objectively assess the elements integrated into the delivery of healthcare services by health personnel. <b>Objective:</b> Our aim was to develop and evaluate the psychometric properties of a measurement scale assessing the right to health in primary care for migrant populations in Chile, from the perspective of healthcare workers. <b>Methods:</b> An instrumental psychometric study was conducted. The sample comprised 339 primary healthcare workers from the Antofagasta, Biobío, and Metropolitan regions of Chile. The stages of the process included a theoretical review, conceptual definition, item construction, initial qualitative evaluation, and scale administration. <b>Results:</b> The initial 55-item model exhibited unsatisfactory fit indices (χ² = 2608.693; df = 1271; <i>p</i> < 0.001; RMSEA = 0.056; CFI = 0.931; TLI = 0.919; SRMR = 0.054), whereas the refined 19-item model achieved satisfactory fit (χ² = 441.72, df = 146, <i>p</i> < 0.001; RMSEA = 0.07; CFI = 0.95; TLI = 0.94; SRMR = 0.05). <b>Conclusions:</b> The scale demonstrates robust internal consistency and offers a valuable tool for evaluating primary healthcare delivery to international migrants based on the right to health framework.