https://neuroscirn.org/ojs/index.php/nrnotes A high quality, free open access and peer-reviewed journal from scientists to scientists. en-US <p>The observations and associated materials published or posted by NeurosciRN are licensed by the authors for use and distribution in accord with the <a href="https://creativecommons.org/licenses/by-nc/4.0/" target="_blank" rel="external noopener">Creative Commons Attribution license CC BY-NC 4.0 international</a>, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.</p> editorial@neuroscirn.org (Editorial Office) support@neuroscirn.org (Technical Support Team) Tue, 30 Jun 2026 00:00:00 +0800 OJS 3.3.0.11 http://blogs.law.harvard.edu/tech/rss 60 https://neuroscirn.org/ojs/index.php/nrnotes/article/view/441 <p>The Patient Health Questionnaire-9 (PHQ-9) and Generalized Anxiety Disorder-7 (GAD-7) are standardized self-report tools for screening depressive and anxiety disorders, respectively. While they have been validated in various cultural contexts, their psychometric properties have not been thoroughly evaluated in Mongolia. This study aimed to validate the PHQ-9 and GAD-7 among young adults in Mongolia, ensuring their reliability and efficacy in assessing mental health. A cross-sectional study was conducted with 1,391 young adults (aged 17-29 years). Tests for internal consistency, test-retest reliability, and validity were performed, including exploratory factor analysis (EFA) and confirmatory factor analysis (CFA). Convergent validity and cut-off scores were assessed using the Hospital Anxiety and Depression Scale (HADS). Results: Both the PHQ-9 and GAD-7 demonstrated excellent internal consistency (Cronbach’s alpha=0.913 and 0.895, respectively) and good test-retest reliability over time (ICC=0.637 for PHQ-9; ICC=0.782 for GAD-7). Factor analyses confirmed their unidimensional structures, explaining 59.1% and 61.5% of variance, respectively. Unidimensional models showed acceptable goodness-of-fit indices, with RMSEA values of 0.051 for PHQ-9 and 0.047 for GAD-7, indicating a close-to-good fit for both models. Strong correlations were observed between PHQ-9 and GAD-7 scores with HADS scores (<em>p</em>&lt;0.001), indicating good convergent validity. Observed cut-off scores yielded high sensitivity and specificity in this sample population. The final Mongolian versions of the questionnaires exhibited robust psychometric properties. The PHQ-9 and GAD-7 were validated as reliable instruments for screening depression and anxiety among medical students in Mongolia. These findings improve the capacity for early identification and intervention in mental health among this population. However, further research should address limitations related to gender representation and the need for assessment in diverse settings.</p> Oyunsuren Jargalsaikhan, Enkhnaran Tumurbaatar, Tergelsaran Olzvoi, Enkh-Uchral Perenleisambuu, Enkhzaya Batkhuyag, Dolgorsuren Dorj, Battuvshin Lkhagvasuren, Gantsetseg Tumur-Ochir Copyright (c) 2026 Oyunsuren Jargalsaikhan, Enkhnaran Tumurbaatar, Tergelsaran Olzvoi, Enkh-Uchral Perenleisambuu, Enkhzaya Batkhuyag, Dolgorsuren Dorj, Battuvshin Lkhagvasuren, Gantsetseg Tumur-Ochir https://creativecommons.org/licenses/by-nc/4.0 https://neuroscirn.org/ojs/index.php/nrnotes/article/view/441 Thu, 11 Jun 2026 00:00:00 +0800