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dc.contributor.authorKrane-Gartiser, Karolineen_US
dc.contributor.authorVaaler, Arneen_US
dc.contributor.authorFasmer, Ole Bernten_US
dc.contributor.authorSørensen, Kjetilen_US
dc.contributor.authorMorken, Gunnaren_US
dc.contributor.authorScott, Janine Lindaen_US
dc.date.accessioned2018-06-26T09:45:51Z
dc.date.available2018-06-26T09:45:51Z
dc.date.issued2017-12-19
dc.PublishedKrane-Gartiser K, Vaaler A, Fasmer OB, Sørensen K, Morken G, Scott JL. Variability of activity patterns across mood disorders and time of day. BMC Psychiatry. 2017;17:404eng
dc.identifier.issn1471-244X
dc.identifier.urihttps://hdl.handle.net/1956/17829
dc.description.abstractBackground: Few actigraphy studies in mood disorders have simultaneously included unipolar (UP) and bipolar (BD) depression or BD mixed states as a separate subgroup from mania. This study compared objectively measured activity in UP, BD depression, mania and mixed states and examined if patterns differed according to time of day and/or diagnostic group. Methods: Eighty -eight acutely admitted inpatients with mood disorders (52 UP; 18 mania; 12 BD depression; 6 mixed states) underwent 24 hours of actigraphy monitoring. Non-parametric analyses were used to compare median activity level over 24 h (counts per minute), two time series (64-min periods of continuous motor activity) in the morning and evening, and variability in activity across and within groups. Results: There was no between-group difference in 24-h median level of activity, but significant differences emerged between BD depression compared to mania in the active morning period, and between UP and mania and mixed states in the active evening period. Within-group analyses revealed that UP cases showed several significant changes between morning and evening activity, with fewer changes in the BD groups. Conclusions: Mean activity over 24 hours has limited utility in differentiating UP and BD. In contrast, analysis of non-linear variability measures of activity at different times of day could help objectively distinguish between mood disorder subgroups.en_US
dc.language.isoengeng
dc.publisherBioMed Centraleng
dc.rightsAttribution CC BYeng
dc.rights.urihttp://creativecommons.org/licenses/by/4.0eng
dc.subjectUnipolareng
dc.subjectBipolareng
dc.subjectMixed stateseng
dc.subjectActigraphyeng
dc.subjectMotor activityeng
dc.subjectTime serieseng
dc.subjectVariabilityeng
dc.subjectNon-linear analysiseng
dc.titleVariability of activity patterns across mood disorders and time of dayen_US
dc.typePeer reviewed
dc.typeJournal article
dc.date.updated2017-12-21T10:52:57Z
dc.description.versionpublishedVersionen_US
dc.rights.holderCopyright 2017 The Author(s)
dc.identifier.doihttps://doi.org/10.1186/s12888-017-1574-x
dc.identifier.cristin1530926
dc.source.journalBMC Psychiatry


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