Supplementary file 1_Quality of life, perceived stress, and use of school-based stress management interventions in high school students: a mixed-methods study during and after COVID-19.docx

IntroductionKey objectives of this study include understanding time trends in stress, understanding the associations of quality of life (QoL) and stress levels, and determining how these factors influence high school students’ engagement with school-based stress management programs.
MethodsTo address these aims, two complementary studies were conducted. Study 1 included two survey waves (2020 and 2021) to examine stress and QoL among German high school students. Stress levels and QoL across psychological, social, familial, and academic domains were assessed using the Perceived Stress Scale (PSS-4) and the KIDSCREEN questionnaire. Study 2 used a mixed-methods approach (paper-based questionnaire and focus groups) to explore the relationship between PSS-4 scores, school-related QoL indicators, and voluntary participation in a school-based stress management intervention day conducted in 2023.
ResultsResults show that stress levels among high school students increased during the COVID-19 pandemic and that low QoL in the school domain predicted higher stress. Moreover, low school-related well-being was associated with more frequent use of school-based stress management interventions.
DiscussionThese findings suggest that demand-tailored stress management programs in high schools could help students better cope with high stress levels—particularly those experiencing low QoL in the school setting.