{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,27]],"date-time":"2026-03-27T14:21:24Z","timestamp":1774621284687,"version":"3.50.1"},"reference-count":21,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2025,8,22]],"date-time":"2025-08-22T00:00:00Z","timestamp":1755820800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001659","name":"Deutsche Forschungsgemeinschaft","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100001659","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Bipolar Disorders"],"published-print":{"date-parts":[[2025,9]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Bipolar disorder (BD) is a recurrent disorder, characterised by episodes of (hypo)mania, depression and euthymia with variation in mood, cognition and sleep. Many patients identify changes in sleep before an episode; using daily sleep logs could help identify these changes. Such early warning signs can be a valuable tool for patients and clinicians alike in predicting and preparing for changes in mood.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>In the BipoSense study, we followed patients with BD, who were in remission at the start of the study, daily for 1 year. Patients reported for each hour if they were awake or asleep through an app and received fortnightly clinical assessments of bipolar symptoms. We used statistical analyses applying person\u2010centred data in multilevel logit models to investigate if sleep patterns could differentiate between the period before an episode (prodromal stage) and euthymia, looking at both mean changes and variability of sleep. Bonferroni\u2010Holm corrections were applied to avoid inflation of type I errors from multiple testing.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Twenty\u2010nine participants were included (mean age 44.0\u2009years [SD\u2009=\u200911.9], female 55% and BD\u2010I 59%). Waking up later was associated with prodromal depression and was the only significant finding for prodromal mood episodes. Greater variability of sleep duration, total time spent in bed and time waking up were associated with prodromal depression; less variability of time falling asleep and time waking up were linked with prodromal (hypo)mania.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Using self\u2010assessed sleep changes and especially variability can be potential tools in helping patients identify early warning signs of mood recurrence; however, these analyses were explorative and further investigations are warranted.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1111\/bdi.70054","type":"journal-article","created":{"date-parts":[[2025,8,23]],"date-time":"2025-08-23T03:49:40Z","timestamp":1755920980000},"page":"449-460","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Can Sleep Parameters Predict Upcoming Mood Episodes in Bipolar Disorder?"],"prefix":"10.1111","volume":"27","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3522-0620","authenticated-orcid":false,"given":"Andrea","family":"Ulrichsen","sequence":"first","affiliation":[{"name":"Department of Psychiatry and Psychotherapy, University Hospital Dresden University of Technology  Dresden Germany"},{"name":"King's College London Institute of Psychiatry, Psychology and Neuroscience  London UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Esther","family":"M\u00fchlbauer","sequence":"additional","affiliation":[{"name":"Department of Psychiatry and Psychotherapy, University Hospital Dresden University of Technology  Dresden Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lisa\u2010Marie","family":"Hartnagel","sequence":"additional","affiliation":[{"name":"Mental mHealth Lab, Institute of Sports and Sport Sciences Karlsruhe Institute of Technology  Karlsruhe Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9135-1679","authenticated-orcid":false,"given":"Emanuel","family":"Severus","sequence":"additional","affiliation":[{"name":"Department of Psychiatry and Psychotherapy, University Hospital Dresden University of Technology  Dresden Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6990-939X","authenticated-orcid":false,"given":"Anthony","family":"Cleare","sequence":"additional","affiliation":[{"name":"King's College London Institute of Psychiatry, Psychology and Neuroscience  London UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3878-3659","authenticated-orcid":false,"given":"Sameer","family":"Jauhar","sequence":"additional","affiliation":[{"name":"King's College London Institute of Psychiatry, Psychology and Neuroscience  London 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