{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,22]],"date-time":"2026-07-22T09:02:36Z","timestamp":1784710956386,"version":"3.55.0"},"reference-count":36,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2026,6,30]],"date-time":"2026-06-30T00:00:00Z","timestamp":1782777600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Public Health"],"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Mobile phone addiction (MPA) is positively associated with adolescent depressive symptoms, yet the moderating role of multidimensional family environments in this relationship remains poorly understood. This study aimed to identify distinct family environment typologies and examine their moderating effects on the MPA-depression association among Chinese adolescents.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>A cross-sectional, school-based survey was conducted among middle and high school students in China. MPA and depressive symptoms were assessed using the Mobile Phone Addiction Index (MPAI) and the Patient Health Questionnaire-9 (PHQ-9), respectively. Latent class analysis (LCA) was employed to identify family environment typologies based on seven socioeconomic and structural indicators. Moderated regression analyses tested interaction effects, adjusting for age and gender.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      A total of 103,874 students (mean age 15.58\u202f\u00b1\u202f1.74; 50.4% female) participated. LCA revealed three family clusters: \u201c\n                      <jats:italic>High-Resource Stable Family<\/jats:italic>\n                      ,\u201d \u201c\n                      <jats:italic>Low-Resource Cohesive Family<\/jats:italic>\n                      ,\u201d and \u201c\n                      <jats:italic>Low-Resource Fragmented Family<\/jats:italic>\n                      .\u201d Adolescents in\n                      <jats:italic>Low-Resource Fragmented family<\/jats:italic>\n                      had significantly higher MPA and depression scores (\n                      <jats:italic>p<\/jats:italic>\n                      \u202f&amp;lt;\u202f0.001). MPA was positively correlated with depression across all groups (\n                      <jats:italic>p<\/jats:italic>\n                      \u202f&amp;lt;\u202f0.001). Family type significantly moderated this relationship, with stronger associations in both Low-Resource clusters (\n                      <jats:italic>p<\/jats:italic>\n                      \u202f&amp;lt;\u202f0.05). Subgroup analyses showed specific moderation effects by gender and school level.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Multidimensional family environments not only shape levels of MPA and depression but also amplify their association in socioeconomically disadvantaged and structurally fragmented contexts. Employing LCA to identify family typologies provides a nuanced, person-centered framework for targeting prevention efforts and identifying adolescents at elevated digital mental health risk.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.3389\/fpubh.2026.1863623","type":"journal-article","created":{"date-parts":[[2026,6,30]],"date-time":"2026-06-30T04:25:42Z","timestamp":1782793542000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["Mobile phone addiction and depression among adolescents: the moderation effect of family environment"],"prefix":"10.3389","volume":"14","author":[{"given":"Yanlin","family":"Bai","sequence":"first","affiliation":[{"name":"Mental Health Center, National Center for Mental Disorders, West China Hospital, Sichuan University","place":["Chengdu, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xia","family":"Xu","sequence":"additional","affiliation":[{"name":"Leshan Psychosomatic Hospital","place":["Leshan, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Weijie","family":"Jiang","sequence":"additional","affiliation":[{"name":"Department of Sociology and Psychology, School of Public Administration, Sichuan University","place":["Chengdu, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuting","family":"Yang","sequence":"additional","affiliation":[{"name":"Mental Health Center, National Center for Mental Disorders, West China Hospital, Sichuan University","place":["Chengdu, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qixi","family":"Li","sequence":"additional","affiliation":[{"name":"Department of Sociology and Psychology, School of Public Administration, Sichuan University","place":["Chengdu, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaoli","family":"Li","sequence":"additional","affiliation":[{"name":"Leshan Psychosomatic Hospital","place":["Leshan, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qian","family":"Zhu","sequence":"additional","affiliation":[{"name":"Leshan Psychosomatic Hospital","place":["Leshan, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yajing","family":"Meng","sequence":"additional","affiliation":[{"name":"Mental Health Center, National Center for Mental Disorders, West China Hospital, Sichuan University","place":["Chengdu, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Changjian","family":"Qiu","sequence":"additional","affiliation":[{"name":"Mental Health Center, National Center for Mental Disorders, West China Hospital, Sichuan University","place":["Chengdu, 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