Is Olfactory Impairment Associated With 10-year Mortality Mediating by Neurodegenerative Diseases in Older Adults? The Four-Way Decomposition Analysis

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Cao, Yang,Associate Professor,1972-Örebro universitet,Institutionen för medicinska vetenskaper,Region Örebro län,Unit of Integrative Epidemiology, Institute of Environmental Medicine, Karolinska Institute, Stockholm, Sweden,Clinical Epidemiology and Biostatistics (författare)

Is Olfactory Impairment Associated With 10-year Mortality Mediating by Neurodegenerative Diseases in Older Adults? The Four-Way Decomposition Analysis

Artikel/kapitelEngelska2021

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2021-11-26
Frontiers Media S.A.2021
printrdacarrier

Nummerbeteckningar

LIBRIS-ID:oai:DiVA.org:oru-95935
https://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-95935URI
https://doi.org/10.3389/fpubh.2021.771584DOI
http://kipublications.ki.se/Default.aspx?queryparsed=id:148314487URI

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Språk:engelska
Sammanfattning på:engelska

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Funding agencies:Shanghai Municipal Science and Technology Major Project 2018SHZDZX01National Natural Science Foundation of China (NSFC) 81773513 State Key Laboratory of Neurobiology and Frontiers Center for Brain Science of Ministry of Education, Fudan University
Background: Literature shows that olfactory impairment (OI) is associated not only with neurodegenerative diseases (NDDs), but also with increased mortality. In this study, we analyzed data collected from the prospective phase of the 10-year follow-up of the Shanghai Aging Study (SAS) to explore the mediation effect of NDDs on the OI-mortality relationship.Methods: We analyzed data collected from the prospective phase of the 10-year follow-up of the SAS. We included 1,811 participants aged 60 years or older who completed both an olfactory identification test and a cognitive assessment at baseline (2010-2011). Survival status of the participants from baseline to December 31, 2019 was obtained from the local mortality surveillance system. We used the four-way decomposition method to attribute effects to interaction and mediation and to explore the mediation effect of NDDs on the OI-mortality relationship.Results: The four-way decomposition method revealed a statistically significant association of OI with death. Overall, 43% higher risk for death was associated with OI [excess relative risk (ERR) = 0.43, 95% CI: 0.06-0.80, p = 0.023]. Excluding the mediation from NDDs and interaction between OI and NDDs, the controlled direct effect of OI on death was even higher in NDDs participants, with an ERR of 77% (95% CI: 0.00-1.55, p = 0.050). Statistically significant association was found for failure to identify coffee (ERR = 0.77, 95% CI: 0.18-1.36, p = 0.010) and marginally significant associations were found for failure to identify cinnamon (ERR = 0.33, 95% CI: -0.02-0.68, p = 0.068) and rose (ERR = 0.33, 95% CI: -0.01-0.67, p = 0.054) with death.Conclusion: OI was associated with the long-term mortality in older adults and the association was even stronger in those with NDDs. Failure to identify coffee or rose was associated with a higher mortality risk, and the association was mediated by NDDs.

Ämnesord och genrebeteckningar

MEDICIN OCH HÄLSOVETENSKAP Annan medicin och hälsovetenskap Gerontologi, medicinsk/hälsovetenskaplig inriktning hsv//swe
MEDICAL AND HEALTH SCIENCES Other Medical and Health Sciences Gerontology, specialising in Medical and Health Sciences hsv//eng
Elderly
mortality
neurodegenerative disease
olfactory
prospective

Biuppslag (personer, institutioner, konferenser, titlar ...)

Xiao, ZhenxuInstitute of Neurology, Huashan Hospital, Fudan University, Shanghai, China; National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai, China; National Center for Neurological Disorders, Shanghai, China (författare)
Wu, WanqingInstitute of Neurology, Huashan Hospital, Fudan University, Shanghai, China; National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai, China; National Center for Neurological Disorders, Shanghai, China (författare)
Zhao, QianhuaInstitute of Neurology, Huashan Hospital, Fudan University, Shanghai, China; National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai, China; National Center for Neurological Disorders, Shanghai, China (författare)
Ding, DingInstitute of Neurology, Huashan Hospital, Fudan University, Shanghai, China; National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai, China; National Center for Neurological Disorders, Shanghai, China (författare)
Örebro universitetInstitutionen för medicinska vetenskaper (creator_code:org_t)

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Ingår i:Frontiers In Public Health: Frontiers Media S.A.92296-2565

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Av författaren/redakt...: Cao, Yang, Assoc ...; Xiao, Zhenxu; Wu, Wanqing; Zhao, Qianhua; Ding, Ding

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