2.50
Hdl Handle:
http://hdl.handle.net/10755/621631
Category:
Full-text
Format:
Text-based Document
Type:
Poster
Level of Evidence:
N/A
Research Approach:
N/A
Title:
Light Therapy on Sleep Phase-Shift in Shift Workers: A Meta-Analysis
Author(s):
Chung, Min-Huey; Lam, Calvin
Lead Author STTI Affiliation:
Lambda Beta-at-Large
Author Details:
Min-Huey Chung, PhD, RN, Professional Experience: 2016-present -- Professor, School of Nursing, Taipei Medical University, Taipei, Taiwan 2011-2016 -- Associate Professor, School of Nursing, Taipei Medical University, Taipei, Taiwan 2008-2011 -- Assistant Professor, School of Nursing, Taipei Medical University, Taipei, Taiwan Author Summary: Dr. Min-Huey Chung is a Professor in the School of Nursing, Taipei Medical University, Taiwan (R.O.C.). She is specialized in nursing, psychiatry, and sleep research.
Abstract:

Purpose:

The treatment effects of Light therapy on sleep were widely studied. However, there was limited meta-analysis had investigated the dose-response of light therapy and for shift workers. We are conducting a meta-analysis by including eligible randomized controlled trials (RCTs) to investigate whether there is dose-response of light therapy on sleep phase shift of shift workers.

Methods:

We searched for relevant articles in 10 databases, included PubMed, Medline, Cochrane, Embase, LILACS, Open Grey, PsycINFO, PubPsych, SCOPUS, and CINAHL. Search keywords included “light therapy”, “shift work”, and “randomization”. Two reviewers independently screened the articles and extracted the data. No additional data were found even after contacting the authors of the eligible studies. We finally included 9 RCTs from 1819 records. Analyses were performed using the random-effects model.

Results:

Outcomes were measured by melatonin concentration and phase shift in hour. Light therapy exerted a significant effect on sleep phase shift, with a large pooled effect size (Hedges’s g = 1.476, p < 0.001). However, There was significant high heterogeneity (Q = 55.56, p < 0.001, I2 = 85.6) but low publication bias (Begg’s test, p = 0.076; Egger’s test, p = 0.081, no missing study in the funnel plot). There were significantly different effect sizes between the studies with the outcomes of melatonin concentration (k = 4, g = 1.201, p = 0.07) and phase shift in hour (k = 5, g = 1.723, p = 0.004). However, no significant treatment dose-response on the sleep phase shift.

Conclusion:

The large effect size suggests that Light therapy is effective in sleep phase shift for shift workers. However, the high heterogeneity, inconsistent effect sizes between different measurements, and non-significant treatment dose-response turn the current findings inconclusive. Further investigation on the possible moderators, such as demographic data, and potential research bias, such as methodological quality, are needed.

Keywords:
light therapy; phase shift; dose response; meta analysis; shift workers
Repository Posting Date:
3-Jul-2017
Date of Publication:
3-Jul-2017
Other Identifiers:
INRC17PST575
Conference Date:
2017
Conference Name:
28th International Nursing Research Congress
Conference Host:
Sigma Theta Tau International
Conference Location:
Dublin, Ireland
Description:
Event Theme: Influencing Global Health Through the Advancement of Nursing Scholarship

Full metadata record

DC FieldValue Language
dc.language.isoen_USen
dc.type.categoryFull-texten
dc.formatText-based Documenten
dc.typePosteren
dc.evidence.levelN/Aen
dc.research.approachN/Aen
dc.titleLight Therapy on Sleep Phase-Shift in Shift Workers: A Meta-Analysisen_US
dc.contributor.authorChung, Min-Hueyen
dc.contributor.authorLam, Calvinen
dc.contributor.departmentLambda Beta-at-Largeen
dc.author.detailsMin-Huey Chung, PhD, RN, Professional Experience: 2016-present -- Professor, School of Nursing, Taipei Medical University, Taipei, Taiwan 2011-2016 -- Associate Professor, School of Nursing, Taipei Medical University, Taipei, Taiwan 2008-2011 -- Assistant Professor, School of Nursing, Taipei Medical University, Taipei, Taiwan Author Summary: Dr. Min-Huey Chung is a Professor in the School of Nursing, Taipei Medical University, Taiwan (R.O.C.). She is specialized in nursing, psychiatry, and sleep research.en
dc.identifier.urihttp://hdl.handle.net/10755/621631-
dc.description.abstract<p><strong>Purpose:</strong></p> <p>The treatment effects of Light therapy on sleep were widely studied. However, there was limited meta-analysis had investigated the dose-response of light therapy and for shift workers. We are conducting a meta-analysis by including eligible randomized controlled trials (RCTs) to investigate whether there is dose-response of light therapy on sleep phase shift of shift workers.</p> <p><strong>Methods:</strong></p> <p>We searched for relevant articles in 10 databases, included PubMed, Medline, Cochrane, Embase, LILACS, Open Grey, PsycINFO, PubPsych, SCOPUS, and CINAHL. Search keywords included “light therapy”, “shift work”, and “randomization”. Two reviewers independently screened the articles and extracted the data. No additional data were found even after contacting the authors of the eligible studies. We finally included 9 RCTs from 1819 records. Analyses were performed using the random-effects model.</p> <p><strong>Results:</strong></p> <p>Outcomes were measured by melatonin concentration and phase shift in hour. Light therapy exerted a significant effect on sleep phase shift, with a large pooled effect size (Hedges’s g = 1.476, p < 0.001). However, There was significant high heterogeneity (Q = 55.56, p < 0.001, I<sup>2</sup> = 85.6) but low publication bias (Begg’s test, p = 0.076; Egger’s test, p = 0.081, no missing study in the funnel plot). There were significantly different effect sizes between the studies with the outcomes of melatonin concentration (k = 4, g = 1.201, p = 0.07) and phase shift in hour (k = 5, g = 1.723, p = 0.004). However, no significant treatment dose-response on the sleep phase shift.</p> <p><strong>Conclusion:</strong></p> <p>The large effect size suggests that Light therapy is effective in sleep phase shift for shift workers. However, the high heterogeneity, inconsistent effect sizes between different measurements, and non-significant treatment dose-response turn the current findings inconclusive. Further investigation on the possible moderators, such as demographic data, and potential research bias, such as methodological quality, are needed.</p>en
dc.subjectlight therapyen
dc.subjectphase shiften
dc.subjectdose responseen
dc.subjectmeta analysisen
dc.subjectshift workersen
dc.date.available2017-07-03T14:51:30Z-
dc.date.issued2017-07-03-
dc.date.accessioned2017-07-03T14:51:30Z-
dc.conference.date2017en
dc.conference.name28th International Nursing Research Congressen
dc.conference.hostSigma Theta Tau Internationalen
dc.conference.locationDublin, Irelanden
dc.descriptionEvent Theme: Influencing Global Health Through the Advancement of Nursing Scholarshipen
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