The Relative Value of Measures of Omega-3 Index, Perceived Stress, Cortisol and Sleep Time in Identifying Depression Among a Cohort of Australian Adolescents

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avondale-bepress-to-dspace.facultyEducation
avondale-bepress-to-dspace.licensehttp://creativecommons.org/licenses/by-nc/3.0/
avondale-bepress-to-dspace.peer_review_statusPeer reviewed before publication
avondale-bepress.abstract<p><strong>Objective:</strong> To assess the relative prognostic value of 11 variables including, omega-3, perceived stress, cortisol and sleep duration, in predicting adolescent depression. <strong></strong></p> <p><strong>Design, Setting and Participants:</strong> A cross-sectional study of 444 healthy adolescents aged 16-18 years, from 10 schools within the Northern Sydney and Central Coast regions of New South Wales, Australia. Participants provided blood and saliva samples and completed questionnaires. Statistical classification methods were used to model the relationships between the predictors and depression. <strong></strong></p> <p><strong>Main Outcome Measures:</strong> relative predictive value of each variable in correctly classifying depression. <strong></strong></p> <p><strong>Results:</strong> 6% of boys and 9% of girls were categorised as experiencing severe to extremely severe depression. 4% of boys and 10% of girls were categorised as experiencing severe to extremely severe stress. The mean AM:PM cortisol for boys, 22±101, was higher than that of girls, 11±10. The average omega-3 index for boys, 10.5±3.7, was also higher than that of girls, 7.7±2.6. The average sleep duration of 7.8±1.1 hrs showed no gender differences. The best classification model identified perceived stress as the most significant predictor of depression followed by BMI and omega-3 index. Cortisol ratio was a significant discriminator for boys but not girls. When stress was excluded, shorter sleep duration became a significant discriminator in both boys and girls with waist to hip ratio providing further discrimination in girls only. <strong></strong></p> <p><strong>Conclusion:</strong> The strongest predictor of depression in adolescents was perceived stress followed by higher BMI and lower omega-3 levels. These findings provide a rational basis for establishing program priorities for the prevention and treatment of adolescent depression.</p>
avondale-bepress.articleid1074
avondale-bepress.authorsRoss Grant
avondale-bepress.authorsAyse Bilgin
avondale-bepress.authorsJade Guest
avondale-bepress.authorsMargaret J Morris
avondale-bepress.authorsManohar Garg
avondale-bepress.authorsRobyn Pearce
avondale-bepress.context-key6763607
avondale-bepress.coverpage-urlhttps://research.avondale.edu.au/edu_papers/72
avondale-bepress.document-typearticle
avondale-bepress.field.author_faculty_disciplineEducation
avondale-bepress.field.comments<p>Used by permission: <a href="http://www.lifescienceglobal.com/">Lifescience Global </a></p>
avondale-bepress.field.custom_citation<p>Grant, R., Bilgin, A., Guest, J., Morris, M. J., Garg, M., & Pearce, R. (2015). The relative value of measures of Omega-3 index, perceived stress, cortisol and sleep time in identifying depression among a cohort of Australian adolescents. <em>International Journal of Child Health and Nutrition, 4</em>(1), 40-49. doi:10.6000/1929-4247.2015.04.01.4</p>
avondale-bepress.field.distribution_licensehttp://creativecommons.org/licenses/by-nc/3.0/
avondale-bepress.field.doihttp://dx.doi.org/10.6000/1929-4247.2015.04.01.4
avondale-bepress.field.embargo_date2015-03-02T00:00:00Z
avondale-bepress.field.field_of_education06 Health
avondale-bepress.field.for111706 Epidemiology
avondale-bepress.field.issn1929-4247
avondale-bepress.field.issue_number1
avondale-bepress.field.journalInternational Journal of Child Health and Nutrition
avondale-bepress.field.page_numbers40-49
avondale-bepress.field.peer_reviewBefore publication
avondale-bepress.field.publication_date2015-02-26T00:00:00Z
avondale-bepress.field.reportable_itemsC1
avondale-bepress.field.research_centreLifestyle Research Centre
avondale-bepress.field.source_publication<p>This article was originally published as:</p> <p>Grant, R., Bilgin, A., Guest, J., Morris, M. J., Garg, M., & Pearce, R. (2015). The relative value of measures of Omega-3 index, perceived stress, cortisol and sleep time in identifying depression among a cohort of Australian adolescents. <em>International Journal of Child Health and Nutrition, 4</em>(1), 40-49. doi:10.6000/1929-4247.2015.04.01.4</p> <p>ISSN:1929-4247</p>
avondale-bepress.field.staff_classificationPermanent
avondale-bepress.field.volume_number4
avondale-bepress.fulltext-urlhttps://research.avondale.edu.au/cgi/viewcontent.cgi?article=1074&amp;context=edu_papers&amp;unstamped=1
avondale-bepress.keywordschild
avondale-bepress.keywordsdepression
avondale-bepress.keywordsadolescent
avondale-bepress.keywordsomega-3
avondale-bepress.keywordssleep
avondale-bepress.keywordsBMI
avondale-bepress.keywordscortisol
avondale-bepress.label72
avondale-bepress.publication-date2015-02-26T00:00:00Z
avondale-bepress.publication-titleEducation Papers and Journal Articles
avondale-bepress.statepublished
avondale-bepress.submission-date2015-03-02T20:19:16Z
avondale-bepress.submission-pathedu_papers/72
avondale-bepress.titleThe Relative Value of Measures of Omega-3 Index, Perceived Stress, Cortisol and Sleep Time in Identifying Depression Among a Cohort of Australian Adolescents
avondale-bepress.typearticle
dc.contributor.authorPearce, Robyn
dc.contributor.authorGarg, Manohar
dc.contributor.authorMorris, Margaret J.
dc.contributor.authorGuest, Jade
dc.contributor.authorBilgin, Ayse
dc.contributor.authorGrant, Ross
dc.date.accessioned2023-11-01T00:39:22Z
dc.date.available2023-11-01T00:39:22Z
dc.date.issued2015-02-26
dc.date.submitted2015-03-02T20:19:16Z
dc.description.abstract<p><strong>Objective:</strong> To assess the relative prognostic value of 11 variables including, omega-3, perceived stress, cortisol and sleep duration, in predicting adolescent depression. <strong></strong></p> <p><strong>Design, Setting and Participants:</strong> A cross-sectional study of 444 healthy adolescents aged 16-18 years, from 10 schools within the Northern Sydney and Central Coast regions of New South Wales, Australia. Participants provided blood and saliva samples and completed questionnaires. Statistical classification methods were used to model the relationships between the predictors and depression. <strong></strong></p> <p><strong>Main Outcome Measures:</strong> relative predictive value of each variable in correctly classifying depression. <strong></strong></p> <p><strong>Results:</strong> 6% of boys and 9% of girls were categorised as experiencing severe to extremely severe depression. 4% of boys and 10% of girls were categorised as experiencing severe to extremely severe stress. The mean AM:PM cortisol for boys, 22±101, was higher than that of girls, 11±10. The average omega-3 index for boys, 10.5±3.7, was also higher than that of girls, 7.7±2.6. The average sleep duration of 7.8±1.1 hrs showed no gender differences. The best classification model identified perceived stress as the most significant predictor of depression followed by BMI and omega-3 index. Cortisol ratio was a significant discriminator for boys but not girls. When stress was excluded, shorter sleep duration became a significant discriminator in both boys and girls with waist to hip ratio providing further discrimination in girls only. <strong></strong></p> <p><strong>Conclusion:</strong> The strongest predictor of depression in adolescents was perceived stress followed by higher BMI and lower omega-3 levels. These findings provide a rational basis for establishing program priorities for the prevention and treatment of adolescent depression.</p>
dc.description.versionBefore publication
dc.identifier.citation<p>Grant, R., Bilgin, A., Guest, J., Morris, M. J., Garg, M., & Pearce, R. (2015). The relative value of measures of Omega-3 index, perceived stress, cortisol and sleep time in identifying depression among a cohort of Australian adolescents. <em>International Journal of Child Health and Nutrition, 4</em>(1), 40-49. doi:10.6000/1929-4247.2015.04.01.4</p>
dc.identifier.doihttp://dx.doi.org/10.6000/1929-4247.2015.04.01.4
dc.identifier.issn1929-4247
dc.identifier.urihttps://research.avondale.edu.au/handle/123456789/06763607
dc.language.isoen_us
dc.provenance<p>This article was originally published as:</p> <p>Grant, R., Bilgin, A., Guest, J., Morris, M. J., Garg, M., & Pearce, R. (2015). The relative value of measures of Omega-3 index, perceived stress, cortisol and sleep time in identifying depression among a cohort of Australian adolescents. <em>International Journal of Child Health and Nutrition, 4</em>(1), 40-49. doi:10.6000/1929-4247.2015.04.01.4</p> <p>ISSN:1929-4247</p>
dc.rights<p>Used by permission: <a href="http://www.lifescienceglobal.com/">Lifescience Global </a></p>
dc.rights.licensehttp://creativecommons.org/licenses/by-nc/3.0/
dc.subjectchild
dc.subjectdepression
dc.subjectadolescent
dc.subjectomega-3
dc.subjectsleep
dc.subjectBMI
dc.subjectcortisol
dc.titleThe Relative Value of Measures of Omega-3 Index, Perceived Stress, Cortisol and Sleep Time in Identifying Depression Among a Cohort of Australian Adolescents
dc.typeJournal Article
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