en Health Promotion Health Promotion پژوهشي Original Article <p style="text-align: justify;"><span style="font-size:14px;"><span style="font-family: times new roman;"><strong>Background;</strong> There is scant evidence regarding the prevalence and main determinants of Obsessive Compulsive Disorder (OCD) in early adulthood, especially at university ages. This study aimed to determine the status of OCD among Iranian college students.<br> <strong>Methods; </strong>This cross-sectional study was conducted on 330 medical students at different academic grades studying at Kermanshah University of Medicalsciences. The final diagnosis of subclinical OCD was based on Maudsley Obsessive Compulsive Inventory (MOCI). The data were entered into the SPSS statistical software, version 19.0 and analyzed using independent T-test and chi-square test. <em>P</em><0.05 was considered to be statistically significant.</span></span><br> <span style="font-size:14px;"><span style="font-family: times new roman;"><strong>Results; </strong>The students&rsquo; mean + SD score of MOCI was 8.1 &plusmn; 6.9. Besides, 103 students (32.4%) obtained scores higher than 9 and, consequently, were diagnosed with subclinical OCD. Among the baseline characteristics, only family history of OCD showed a significant relationship with the frequency of subclinical OCD (<em>P</em><0.05).</span></span><br> <span style="font-size:14px;"><span style="font-family: times new roman;"><strong>Conclusion; </strong>Since family history, as the only determinant of OCD in our study, cannot be modified, students and families have to be trained to control their disorder.</span></span></p> <p></p> College students, Disorders, Obsessive compulsive 213 219 http://jhehp.zums.ac.ir/browse.php?a_code=A-10-69-2&slc_lang=en&sid=1 Marzieh Assareh trakhshani@gmail.com 10031947532846009356 10031947532846009356 No Department of Psychiatry, Bahonar Hospital, Alborz University of Medical Sciences ,karaj, Iran. Tayebeh Rakhshani healthacademic2014@gmail.com 10031947532846009357 10031947532846009357 Yes Nutrition Research Center Department of Public Health, Shiraz University of Medical Sciences, Shiraz, Iran. Mansour Kashfi SMkashfi@yahoo.com 10031947532846009358 10031947532846009358 No Department of Public Health, Shiraz University of Medical Science, Shiraz, Iran. Maryam Ayazi maryam.ayazi@gmail.com 10031947532846009359 10031947532846009359 No Research Assistant, Social Welfare University of Medical Sciences, Tehran, Iran.