en Community Health Community Health Original Research Original Research <p><strong>Background: </strong>As a primary phase of a Health Impact Assessment (HIA) on the Iranian Targeted Subsidy Plan (TSP), this study was conducted to assess the psychometric properties of a newly developed quantitative Health Policy Impact Assessment Tool (HEPIAT).<br> <strong>&nbsp;&nbsp; Methods:</strong> In 2014, multistage cluster sampling was employed to recruit 509 key informants in Sanandaj, Iran, to participate in this cross-sectional study. A comprehensive literature review was conducted to develop the initial draft of HEPIAT. Content validity was determined by a consensus panel of experts, and construct validity and factor structure of the HEPIAT were assessed using Exploratory Factor Analysis (EFA). Reliability was assessed utilizing the Cronbach&rsquo;s alpha coefficient and the test&ndash; retest reliability coefficient.<br> <strong>&nbsp;&nbsp; Results:</strong> Applying EFA, the optimal solution including 35 items and 6 factors was emerged, which accounted for 64.94% of the total variance. The mean items&rsquo; relevancy, clarity, simplicity, and their total mean&plusmn;SD score were 88.3&plusmn;0.2, 90.1&plusmn;0.5, 86.1&plusmn;0.7, and 89.6&plusmn;0.4, respectively. The scores of intra-class correlation coefficients (ICC) and internal consistency reliability for all the factors were ranged from 0.67 to 0.89. HEPIAT demonstrated an appropriate validity, reliability, functionality, and simplicity.<br> <strong>&nbsp;&nbsp; Conclusion:</strong> Although further works in different settings are warranted, HEPIAT may be a practical and useful quantitative instrument in socioeconomic-related HIAs aimed to inform policymakers and stakeholders on the health impacts of their decisions and plans.<br> &nbsp;</p> Health impact assessment, Targeted subsidy plan, Instrumentation, Health determinants, Healthy public policy 124 131 http://mjiri.iums.ac.ir/browse.php?a_code=A-10-2714-1&slc_lang=en&sid=1 Haidar Nadrian haidarnadrian@gmail.com 200319475328460036843 200319475328460036843 Yes Social Determinants of Health Research Center, Tabriz University of Medical Sciences, Tabriz, Iran & Department of Health Education and Promotion, Faculty of Health, Tabriz University of Medical Sciences, Tabriz, Iran. Towhid Babazadeh towhidbabazadeh@gmail.com 200319475328460036844 200319475328460036844 No Department of Health Education and Promotion, Faculty of Health, Tabriz University of Medical Sciences, Tabriz, Iran. Nadia Nadrian nadia.nadrian@gmail.com 200319475328460036845 200319475328460036845 No School of Psychology and Training Sciences, Islamic Azad University-Sanandaj Branch, Sanandaj, Iran. Hassan Mahmoodi hassanmahmoodi@gmail.com 200319475328460036846 200319475328460036846 No Department of Health Education and Promotion, Faculty of Health, Tabriz University of Medical Sciences, Tabriz, Iran. Anvar Khosravi khosravi_a@yahoo.com 200319475328460036847 200319475328460036847 No School of Human Sciences, Islamic Azad University-Sanandaj Branch, Sanandaj, Iran.