Objectives This study uses the short-form Center for Epidemiological Studies-Depression Scale (CES-D) to screen for depression among Korean career soldiers, aiming to protect mental health and ensure military stability. Methods The study involves 2922 career soldiers who completed online self-report question-naires assessing suicidality, depression, anxiety, and social support. Diagnosis of major depres-sive episodes (MDEs) using the Korean version of the Mini International Neuropsychiatric Inter-view (K-MINI) was confirmed through Pearson correlation analysis of the 20 CES-D items. The top three correlated items form the Depression Screening Questionnaire for Korean Career sol-diers (DSQ-KC). Receiver operating characteristic curves and area under the curve (AUC) values were obtained, with the DSQ-KC total score as the explanatory variable and MDEs as the re-sponse variable. Independent t-tests were performed to determine whether suicidality, anxiety, and social support differed based on the cut-off scores of the DSQ-KC. Results In the analysis of each CES-D item with an MDE diagnosis, items 4, 6, and 3 were ob-tained. The AUC value was 0.958. At a cut-off score of 2, sensitivity and specificity were 93.9% and 89.9%, respectively, with positive and negative predictive values of 14.7% and 99.6%, re-spectively. Conversely, at a cut-off score of 3, sensitivity and specificity were 83.7% and 94.4%, respectively, with positive and negative predictive values of 27.7% and 98.9%, respectively. As-sociations with suicidality, anxiety, and use of social networks from cut-off scores of 2 or 3 were examined. Conclusion The DSQ-KC, developed with three reliable items, is user-friendly and can be uti-lized in suicide prevention projects for career soldiers.
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