{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,27]],"date-time":"2026-09-27T14:57:48Z","timestamp":1790521068492,"version":"4.1.0"},"reference-count":30,"publisher":"SAGE Publications","license":[{"start":{"date-parts":[[2026,9,24]],"date-time":"2026-09-24T00:00:00Z","timestamp":1790208000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,9,24]],"date-time":"2026-09-24T00:00:00Z","timestamp":1790208000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"funder":[{"DOI":"10.13039\/501100006636","name":"Forskningsr\u00e5det f\u00f6r h\u00e4lsa, arbetsliv och v\u00e4lf\u00e4rd","doi-asserted-by":"publisher","award":["2022-00963"],"award-info":[{"award-number":["2022-00963"]}],"id":[{"id":"10.13039\/501100006636","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100003173","name":"Crafoordska Stiftelsen","doi-asserted-by":"publisher","award":["20230514"],"award-info":[{"award-number":["20230514"]}],"id":[{"id":"10.13039\/501100003173","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Scand J Public Health"],"abstract":"<jats:sec>\n                    <jats:title>Aim:<\/jats:title>\n                    <jats:p>To investigate the associations of difficulties falling asleep with problematic social media use, cyberbullying, and mental well-being among Swedish adolescents aged 11\u201315\u2009years and to explore age-related differences while adjusting for gender and perceived family financial situation.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods:<\/jats:title>\n                    <jats:p>This study employed a large population-based cross-sectional design based on data from the Swedish sample of the Health Behaviour in School-aged Children survey. The sample included 40,748 adolescents aged 11, 13, and 15\u2009years. Descriptive and bivariate analyses were conducted, followed by binary logistic regression analyses.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>Difficulties falling asleep more than once a week were associated with problematic social media use, cyberbullying, lower mental well-being, and a less favorable family financial situation across all age groups. Among the psychosocial factors, lower mental well-being exhibited the strongest association with difficulties falling asleep, with approximately threefold higher odds among 11-year-olds and fourfold higher odds among 13- and 15-year-olds. Problematic social media use was more strongly associated with difficulties falling asleep in younger adolescents, while exposure to cyberbullying was linked to roughly twofold higher odds across all ages; cyberbullying perpetration was associated with difficulties falling asleep mainly among 11- and 13-year-olds.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions:<\/jats:title>\n                    <jats:p>\n                      <jats:bold>The study reveals that difficulties falling asleep among adolescents are associated with problematic social media use and lower mental well-being, suggesting that interventions targeting difficulties falling asleep and healthy digital media use in early adolescence might be an important strategy to promote mental well-being.<\/jats:bold>\n                    <\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/14034948261485372","type":"journal-article","created":{"date-parts":[[2026,9,24]],"date-time":"2026-09-24T09:59:54Z","timestamp":1790243994000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["Difficulties falling asleep and psychosocial factors among Swedish adolescents aged 11\u201315\u2009years: A population-based study"],"prefix":"10.1177","author":[{"ORCID":"https:\/\/orcid.org\/0009-0008-9514-5064","authenticated-orcid":false,"given":"Ann-Sofi","family":"Ellertsson","sequence":"first","affiliation":[{"name":"Children\u2019s and Young People\u2019s Health in Social Context (CYPHiSCO), Faculty of Health Sciences, Kristianstad University, Sweden"},{"name":"The Research Platform for Collaboration for Health, Faculty of Health Sciences, Kristianstad University, Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7364-1683","authenticated-orcid":false,"given":"Joakim","family":"Ekstrand","sequence":"additional","affiliation":[{"name":"Children\u2019s and Young People\u2019s Health in Social Context (CYPHiSCO), Faculty of Health Sciences, Kristianstad University, Sweden"},{"name":"The Research Platform for Collaboration for Health, Faculty of Health Sciences, Kristianstad University, Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gita","family":"Hedin","sequence":"additional","affiliation":[{"name":"Children\u2019s and Young People\u2019s Health in Social Context (CYPHiSCO), Faculty of Health Sciences, Kristianstad University, Sweden"},{"name":"The Research Platform for Collaboration for Health, Faculty of Health Sciences, Kristianstad University, Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christina","family":"Sandlund","sequence":"additional","affiliation":[{"name":"Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden"},{"name":"Academic Primary Health Care Centre, Region Stockholm, Stockholm, Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1643-0171","authenticated-orcid":false,"given":"Pernilla","family":"Garmy","sequence":"additional","affiliation":[{"name":"Children\u2019s and Young People\u2019s Health in Social Context (CYPHiSCO), Faculty of Health Sciences, Kristianstad University, Sweden"},{"name":"The Research Platform for Collaboration for Health, Faculty of Health Sciences, Kristianstad University, Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2026,9,24]]},"reference":[{"key":"e_1_3_2_2_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.sleh.2021.10.008"},{"key":"e_1_3_2_3_2","unstructured":"Jakobsson M. 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