{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,19]],"date-time":"2026-03-19T14:55:06Z","timestamp":1773932106780,"version":"3.50.1"},"reference-count":69,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2026,3,19]],"date-time":"2026-03-19T00:00:00Z","timestamp":1773878400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100011576","name":"Scientific Research Projects Coordination Unit of the \u0130n\u00f6n\u00fc University","doi-asserted-by":"publisher","award":["TSA-2026-4622"],"award-info":[{"award-number":["TSA-2026-4622"]}],"id":[{"id":"10.13039\/501100011576","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Children"],"abstract":"<jats:p>Background\/Objectives: Post-traumatic stress disorder (PTSD) is a common psychiatric consequence of trauma, and adolescents may be particularly vulnerable after large-scale disasters. Sleep disturbances and circadian preference may play a role in PTSD symptomatology. This study aimed to investigate the associations between PTSD, sleep quality, sleep problems, and chronotype in adolescents exposed to an earthquake. Methods: This cross-sectional study included 201 adolescents aged 12\u201318 years: 92 diagnosed with PTSD and 109 earthquake-exposed controls without a DSM-5 psychiatric disorder. Participants completed the Children\u2019s Posttraumatic Stress Reaction Index (CPTS-RI), Pittsburgh Sleep Quality Index (PSQI), Children\u2019s Sleep Habits Questionnaire (CSHQ), and Children\u2019s Chronotype Questionnaire (CCTQ). Group differences, correlation analyses, and binary logistic regression analyses were performed. Results: Adolescents with PTSD had significantly higher CPTS-RI, PSQI, CSHQ, and CCTQ scores compared with controls (all p &lt; 0.001), indicating poorer sleep quality, more sleep problems, and a greater tendency toward eveningness. PTSD severity was positively correlated with sleep problems, impaired sleep quality, and eveningness. In logistic regression analysis, poor sleep quality (p &lt; 0.001) and clinically significant sleep problems (p = 0.011) were independently associated with PTSD, whereas chronotype was not. Conclusions: Sleep disturbances are more strongly associated with PTSD than chronotype in earthquake-exposed adolescents. Assessment and treatment of sleep problems may represent an important therapeutic target following large-scale trauma.<\/jats:p>","DOI":"10.3390\/children13030423","type":"journal-article","created":{"date-parts":[[2026,3,19]],"date-time":"2026-03-19T11:50:36Z","timestamp":1773921036000},"page":"423","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Association of Sleep Quality, Sleep Disturbances, and Chronotype with Post-Traumatic Stress Disorder in Earthquake-Exposed Adolescents"],"prefix":"10.3390","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0528-6517","authenticated-orcid":false,"given":"G\u00fcrkan","family":"Temelli","sequence":"first","affiliation":[{"name":"Department of Child and Adolescent Psychiatry, Inonu University, Malatya 44280, T\u00fcrkiye"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7785-2805","authenticated-orcid":false,"given":"Yunus Emre","family":"D\u00f6nmez","sequence":"additional","affiliation":[{"name":"Department of Child and Adolescent Psychiatry, Inonu University, Malatya 44280, T\u00fcrkiye"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2026,3,19]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"American Psychiatric Association (2013). 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