en <span style=font-size:11pt><span style=line-height:normal><span style=font-family:Calibri,sans-serif><b><span style=font-size:12.0pt><span cambria= style=font-family:>Abstract </span></span></b><b><span dir=RTL lang=FA style=font-size:12.0pt><span style=font-family:Times New Roman,serif></span></span></b></span></span></span><br> <span style=font-size:11pt><span style=line-height:normal><span style=font-family:Calibri,sans-serif><b><span style=font-size:12.0pt><span cambria= style=font-family:>Background:</span></span></b><span style=font-size:12.0pt><span cambria= style=font-family:> Depression is the most common mental disorder worldwide, affecting a range of different age groups, including adolescents and youth. This study aimed to provide a national model for a depression information system in Iranian adolescents and youth.</span></span></span></span></span><br> <span style=font-size:11pt><span style=line-height:normal><span style=font-family:Calibri,sans-serif><b><span style=font-size:12.0pt><span cambria= style=font-family:>Methods:</span></span></b><span style=font-size:12.0pt><span cambria= style=font-family:> This applied study was conducted in three stages. In the first stage, depression information systems in different countries were examined by conducting a literature review, and Denmark, the United States of America, China, Indonesia, and India were selected as the countries for conducting a comparative study. In the second stage, after reviewing information sources, conducting a comparative study in the selected countries, and also considering the geographical and social conditions of Iran, a proposed model for the national depression information system in Iran was presented. In the third stage, the proposed model was validated using expert opinion obtained from specialists in psychiatry, psychology, and health information management, and finally approved after incorporating their feedback. </span></span></span></span></span><br> <span style=font-size:11pt><span style=line-height:normal><span style=font-family:Calibri,sans-serif><b><span style=font-size:12.0pt><span cambria= style=font-family:>Findings:</span></span></b><span style=font-size:12.0pt><span cambria= style=font-family:> Two parts, structural components and key processes of the information system, were identified as the main components of the proposed model of the information system for depression in adolescents and youth in Iran. </span></span></span></span></span><br> <span style=font-size:11pt><span style=line-height:normal><span style=font-family:Calibri,sans-serif><b><span style=font-size:12.0pt><span cambria= style=font-family:>Conclusion:</span></span></b><span style=font-size:12.0pt><span cambria= style=font-family:> By implementing a national information system on depression in adolescents and youth, systematic access to accurate data and statistics related to depression in this population group will be provided. The model in the present study can provide an appropriate information infrastructure for the implementation of a national information system on depression in adolescents and youth in Iran</span></span></span></span></span> Adolescent,Youths,Information system,Depression,Registry 1001 1012 http://hehp.modares.ac.ir/browse.php?a_code=A-10-73063-3&slc_lang=en&sid=4