fa بهداشت Health پژوهشي Original Article <div style="text-align: justify;"><span style="font-family:Times New Roman;"><span style="font-size:11pt"><span style="line-height:normal"><span sans-serif=""><b><i><span style="font-size:12.0pt"><span new="" roman="" times="">Background and Purpose: </span></span></i></b><span style="font-size:12.0pt"><span new="" roman="" times="">COVID-19&rsquo;s proliferation worldwide remains a significant threat to public health; therefore, the assessment and measurement of people&rsquo;s intentions concerning the prevention of this threat can contribute to the development of suitable educational messages that promote preventive behaviors. This study aimed to develop a questionnaire to determine the factors affecting person&rsquo; intention of COVID-19 prevention (FAPI-COP).<span class="fontstyle01" serif=""><span style="color:#333666"><span style="font-weight:normal"><span style="font-style:normal"><span style="font-family:"Times New Roman","serif""></span></span></span></span></span></span></span></span></span></span><br> <span style="font-size:11pt"><span style="line-height:normal"><span sans-serif=""><b><i><span style="font-size:12.0pt"><span new="" roman="" times="">Materials and Methods</span></span></i></b><b><span style="font-size:12.0pt"><span new="" roman="" times="">: </span></span></b><span style="font-size:12.0pt"><span new="" roman="" times="">This descriptive study was conducted on the people living in Mazandaran Province in 2020. The questionnaire was designed via literature review, focus group discussions, and interview with experts. A total of 10 specialists were selected to determine the content validity scores and 10 Mazandarani laypeople used to determine the reliability of the questionnaire. Finally, content validity index (CVI) and content validity ratio (CVR) were calculated by using Cronbach&rsquo;s alpha and intraclass correlation coefficient (ICC) in SPSS, version 24.00.</span></span></span></span></span><br> <span style="font-size:11pt"><span style="line-height:normal"><span sans-serif=""><b><i><span style="font-size:12.0pt"><span new="" roman="" times="">Results</span></span></i></b><b><span style="font-size:12.0pt"><span new="" roman="" times="">: </span></span></b><span style="font-size:12.0pt"><span new="" roman="" times="">The first questionnaire consisted of 51 questions, and after evaluating validity and reliability, 36 questions were obtained. The content validity index of the questionnaire was 0.91, the content validity ratio 0.69, the Cronbach&#39;s alpha coefficient 0.78, and the internal correlation coefficient (ICC) 0.95 with the confidence interval of 0.80-0.99.</span></span></span></span></span><br> <span style="font-size:11pt"><span style="line-height:normal"><span sans-serif=""><b><i><span style="font-size:12.0pt"><span new="" roman="" times="">Conclusion</span></span></i></b><b><span style="font-size:12.0pt"><span new="" roman="" times="">: </span></span></b><span style="font-size:12.0pt"><span new="" roman="" times="">The results of the study showed that the present questionnaire had acceptable levels of reliability and validity, making it a useful tool in determining the factors affecting intention of COVID-19 prevention by people.</span></span></span></span></span></span></div> Questionnaire Development, Validation, Intention, Prevention, COVID-19 1 12 http://jhs.mazums.ac.ir/browse.php?a_code=A-10-880-1&slc_lang=fa&sid=1 Maryam Khazaee-Pool khazaie_myahoo.com 10031947532846008880 10031947532846008880 No Mazandaran University of Medical Sciences, Sari, Iran Seyed Abolhassan Naghibi anaghibi1345@yahoo.com 10031947532846008881 10031947532846008881 Yes Mazandaran University of Medical Sciences, Sari, Iran Tahereh Pashaei pashaeit@gmail.com 10031947532846008882 10031947532846008882 No Environmental Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran Koen Ponnet Koen.Ponnetuantwerpen.be 10031947532846008883 10031947532846008883 No imec-mict, Ghent University, Ghent, Belgium