AUTHOR=Baldofski Sabrina , Klemm Sarah-Lena , Kohls Elisabeth , Mueller Sophia M. E. , Bauer Stephanie , Becker Katja , Diestelkamp Silke , Eschenbeck Heike , Hiery Alisa , Kaess Michael , Koenig Julian , Lehner Laya , Moessner Markus , Thomasius Rainer , Rummel-Kluge Christine TITLE=Reasons for non-participation of children and adolescents in a large-scale school-based mental health project JOURNAL=Frontiers in Public Health VOLUME=Volume 11 - 2023 YEAR=2024 URL=https://www.frontiersin.org/journals/public-health/articles/10.3389/fpubh.2023.1294862 DOI=10.3389/fpubh.2023.1294862 ISSN=2296-2565 ABSTRACT=interests. KB has received honorary from Georg Thieme Publisher during the last five years outside and independent of the submitted work. CR-K received lecture honoraria from Recordati and Servier outside and independent of the submitted work.SaB and SLK equally contributed to the current paper and share first authorship. SaB, EK, and CR-K designed the study and constructed the questionnaire. SaB performed the statistical analysis and SMEM performed the qualitative analysis. SaB, SLK, and EK drafted the article.