Article: Short or long sleep duration is associated with memory impairment in older chinese: The Guangzhou Biobank Cohort Study

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TitleShort or long sleep duration is associated with memory impairment in older chinese: The Guangzhou Biobank Cohort Study
AuthorsXu, L1
Jiang, CQ3
Lam, TH1
Liu, B3
Jin, YL3
Zhu, T3
Zhang, WS3
Cheng, KK2
Thomas, GN2
KeywordsInsomnia
Memory impairment
Napping
Sleep
Sleep duration
Issue Date2011
PublisherThe American Academy of Sleep Medicine. The Journal's web site is located at http://www.journalsleep.org
CitationSleep, 2011, v. 34 n. 5, p. 575-580 [How to Cite?]
AbstractStudy Objectives: To examine the association between sleep-related factors and memory impairment. Design: Cross-sectional study Setting: Community-based study in Guangzhou, China. Participants: 28,670 older Chinese (20,776 women and 7,894 men) aged 50 to 85 years. Measurements and Results: Demographic and socioeconomic data, sleep-related factors, and cognitive function were collected by face-to-face interview. Potential confounders, such as employment and occupational status, smoking, alcohol and tea use, physical activity, self-rated health, anthropometry, blood pressure, and fasting plasma glucose and lipids were measured. After adjusting for multiple potential confounders, an inverted U-shaped association between sleep duration and delayed word recall test (DWRT) score, a validated measure of memory impairment, was found, with 7 to 8 h of habitual sleep duration showing the highest score (P-values for trend from 3 to 7 h and from 7 to ≥ 10 h were all ≤ 0.001). Compared to sleep duration of 7 h, the adjusted odds ratio for memory impairment from the sleep duration of 3 to 4 or ≥ 10 h was 1.29 (95% confidence interval 1.07-1.56) and 1.52 (1.25-1.86), respectively. Subjects with daily napping, morning tiredness, or insomnia had significantly lower DWRT scores than those without (P ranged from < 0.001 to 0.01).Conclusions: Short or long sleep duration was an important sleep-related factor independently associated with memory impairment and may be a useful marker for increased risk of cognitive impairment in older people. © Copyright 2011 Associated Professional Sleep Societies, LLC.
ISSN0161-8105
2011 Impact Factor: 5.051
2011 SCImago Journal Rankings: 0.343
PubMed Central IDPMC3079936
ReferencesReferences in Scopus
DC Field
Value
dc.contributor.authorXu, L
dc.contributor.authorJiang, CQ
dc.contributor.authorLam, TH
dc.contributor.authorLiu, B
dc.contributor.authorJin, YL
dc.contributor.authorZhu, T
dc.contributor.authorZhang, WS
dc.contributor.authorCheng, KK
dc.contributor.authorThomas, GN
dc.date.accessioned2011-06-17T09:22:12Z
dc.date.available2011-06-17T09:22:12Z
dc.date.issued2011
dc.description.abstractStudy Objectives: To examine the association between sleep-related factors and memory impairment. Design: Cross-sectional study Setting: Community-based study in Guangzhou, China. Participants: 28,670 older Chinese (20,776 women and 7,894 men) aged 50 to 85 years. Measurements and Results: Demographic and socioeconomic data, sleep-related factors, and cognitive function were collected by face-to-face interview. Potential confounders, such as employment and occupational status, smoking, alcohol and tea use, physical activity, self-rated health, anthropometry, blood pressure, and fasting plasma glucose and lipids were measured. After adjusting for multiple potential confounders, an inverted U-shaped association between sleep duration and delayed word recall test (DWRT) score, a validated measure of memory impairment, was found, with 7 to 8 h of habitual sleep duration showing the highest score (P-values for trend from 3 to 7 h and from 7 to ≥ 10 h were all ≤ 0.001). Compared to sleep duration of 7 h, the adjusted odds ratio for memory impairment from the sleep duration of 3 to 4 or ≥ 10 h was 1.29 (95% confidence interval 1.07-1.56) and 1.52 (1.25-1.86), respectively. Subjects with daily napping, morning tiredness, or insomnia had significantly lower DWRT scores than those without (P ranged from < 0.001 to 0.01).Conclusions: Short or long sleep duration was an important sleep-related factor independently associated with memory impairment and may be a useful marker for increased risk of cognitive impairment in older people. © Copyright 2011 Associated Professional Sleep Societies, LLC.
dc.description.naturelink_to_OA_fulltext
dc.identifier.citationSleep, 2011, v. 34 n. 5, p. 575-580 [How to Cite?]
dc.identifier.epage580
dc.identifier.hkuros185482
dc.identifier.isiWOS:000291145800007
dc.identifier.issn0161-8105
2011 Impact Factor: 5.051
2011 SCImago Journal Rankings: 0.343
dc.identifier.issue5
dc.identifier.openurl
dc.identifier.pmcidPMC3079936
dc.identifier.pmid21532950
dc.identifier.scopuseid_2-s2.0-79955555744
dc.identifier.spage575
dc.identifier.urihttp://hdl.handle.net/10722/134493
dc.identifier.volume34
dc.languageeng
dc.publisherThe American Academy of Sleep Medicine. The Journal's web site is located at http://www.journalsleep.org
dc.publisher.placeUnited States
dc.relation.ispartofSleep
dc.relation.referencesReferences in Scopus
dc.subjectInsomnia
dc.subjectMemory impairment
dc.subjectNapping
dc.subjectSleep
dc.subjectSleep duration
dc.titleShort or long sleep duration is associated with memory impairment in older chinese: The Guangzhou Biobank Cohort Study
dc.typeArticle
Author Affiliations
  1. The University of Hong Kong
  2. University of Birmingham
  3. Guangzhou No. 12 Hospital