Longitudinal analysis of risk factors for dementia based on Mild Cognitive Impairment Screen results and questionnaire responses from healthy Japanese individuals registered in an online database

Abstract Introduction Despite an urgent need for developing remedial measures against dementia, no disease‐modifying drugs have been developed. Efficient protocols for participant recruitment need to be established for conducting clinical trials. To meet this need, a large‐scale online registry syst...

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Main Authors: Masayo Ogawa, Kazushi Maruo, Daichi Sone, Hiroyuki Shimada, Keisuke Suzuki, Hiroshi Watanabe, Hiroshi Matsuda, Hidehiro Mizusawa
Format: Article
Language:English
Published: Wiley 2019-01-01
Series:Alzheimer’s & Dementia: Translational Research & Clinical Interventions
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Online Access:https://doi.org/10.1016/j.trci.2019.06.003
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author Masayo Ogawa
Kazushi Maruo
Daichi Sone
Hiroyuki Shimada
Keisuke Suzuki
Hiroshi Watanabe
Hiroshi Matsuda
Hidehiro Mizusawa
author_facet Masayo Ogawa
Kazushi Maruo
Daichi Sone
Hiroyuki Shimada
Keisuke Suzuki
Hiroshi Watanabe
Hiroshi Matsuda
Hidehiro Mizusawa
author_sort Masayo Ogawa
collection DOAJ
description Abstract Introduction Despite an urgent need for developing remedial measures against dementia, no disease‐modifying drugs have been developed. Efficient protocols for participant recruitment need to be established for conducting clinical trials. To meet this need, a large‐scale online registry system, the Integrated Registry of Orange Plan (IROOP®), was created for healthy individuals. Although the risk factors for dementia have been discussed in our previous studies for a short interval of 6 months, some factors remain controversial. The present study aimed to explore factors affecting longitudinal changes in cognitive function for a longer interval of 18 months using the IROOP® data. Methods This study assessed the longitudinal changes in the collated data for predicting the risk of dementia and included 473 individuals (175 men and 298 women; mean age 59.6 ± 10.1 years) registered in the IROOP® between July 5, 2016 and January 15, 2018 who completed the initial questionnaire and brief assessment of cognitive function (Mild Cognitive Impairment Screen) at baseline and the regular questionnaire and the Mild Cognitive Impairment Screen at least once after baseline. Statistical analyses were performed using IBM SPSS, version 23.0, for Windows for demographic data and the MIXED procedure in SAS, version 9.4, for the linear mixed‐effect model. In each analysis, the statistical significance level was set at P < .05. Results Mood, sleep, quality of life, and medical histories including cognition were found to influence longitudinal changes in cognitive function. Discussion Given the multifactorial etiology of dementia, preventive measures targeting multiple domains are required for maintaining cognitive function, instead of focusing on one lifestyle factor.
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spelling doaj-art-c223bfa9f8d7405ebe79d9790cc715f02025-08-20T03:21:59ZengWileyAlzheimer’s & Dementia: Translational Research & Clinical Interventions2352-87372019-01-015134735310.1016/j.trci.2019.06.003Longitudinal analysis of risk factors for dementia based on Mild Cognitive Impairment Screen results and questionnaire responses from healthy Japanese individuals registered in an online databaseMasayo Ogawa0Kazushi Maruo1Daichi Sone2Hiroyuki Shimada3Keisuke Suzuki4Hiroshi Watanabe5Hiroshi Matsuda6Hidehiro Mizusawa7Integrative Brain Imaging Center, National Center of Neurology and PsychiatryKodairaTokyoJapanTranslational Medical Center, National Center of Neurology and PsychiatryKodairaTokyoJapanIntegrative Brain Imaging Center, National Center of Neurology and PsychiatryKodairaTokyoJapanCenter for Gerontology and Social Science, National Center for Geriatrics and GerontologyObuAichiJapanInnovation Center for Clinical Research, National Center for Geriatrics and GerontologyObuAichiJapanInnovation Center for Clinical Research, National Center for Geriatrics and GerontologyObuAichiJapanIntegrative Brain Imaging Center, National Center of Neurology and PsychiatryKodairaTokyoJapanNational Center of Neurology and PsychiatryKodairaTokyoJapanAbstract Introduction Despite an urgent need for developing remedial measures against dementia, no disease‐modifying drugs have been developed. Efficient protocols for participant recruitment need to be established for conducting clinical trials. To meet this need, a large‐scale online registry system, the Integrated Registry of Orange Plan (IROOP®), was created for healthy individuals. Although the risk factors for dementia have been discussed in our previous studies for a short interval of 6 months, some factors remain controversial. The present study aimed to explore factors affecting longitudinal changes in cognitive function for a longer interval of 18 months using the IROOP® data. Methods This study assessed the longitudinal changes in the collated data for predicting the risk of dementia and included 473 individuals (175 men and 298 women; mean age 59.6 ± 10.1 years) registered in the IROOP® between July 5, 2016 and January 15, 2018 who completed the initial questionnaire and brief assessment of cognitive function (Mild Cognitive Impairment Screen) at baseline and the regular questionnaire and the Mild Cognitive Impairment Screen at least once after baseline. Statistical analyses were performed using IBM SPSS, version 23.0, for Windows for demographic data and the MIXED procedure in SAS, version 9.4, for the linear mixed‐effect model. In each analysis, the statistical significance level was set at P < .05. Results Mood, sleep, quality of life, and medical histories including cognition were found to influence longitudinal changes in cognitive function. Discussion Given the multifactorial etiology of dementia, preventive measures targeting multiple domains are required for maintaining cognitive function, instead of focusing on one lifestyle factor.https://doi.org/10.1016/j.trci.2019.06.003Online registryRisk factorsDementiaCognitive functionSleep
spellingShingle Masayo Ogawa
Kazushi Maruo
Daichi Sone
Hiroyuki Shimada
Keisuke Suzuki
Hiroshi Watanabe
Hiroshi Matsuda
Hidehiro Mizusawa
Longitudinal analysis of risk factors for dementia based on Mild Cognitive Impairment Screen results and questionnaire responses from healthy Japanese individuals registered in an online database
Alzheimer’s & Dementia: Translational Research & Clinical Interventions
Online registry
Risk factors
Dementia
Cognitive function
Sleep
title Longitudinal analysis of risk factors for dementia based on Mild Cognitive Impairment Screen results and questionnaire responses from healthy Japanese individuals registered in an online database
title_full Longitudinal analysis of risk factors for dementia based on Mild Cognitive Impairment Screen results and questionnaire responses from healthy Japanese individuals registered in an online database
title_fullStr Longitudinal analysis of risk factors for dementia based on Mild Cognitive Impairment Screen results and questionnaire responses from healthy Japanese individuals registered in an online database
title_full_unstemmed Longitudinal analysis of risk factors for dementia based on Mild Cognitive Impairment Screen results and questionnaire responses from healthy Japanese individuals registered in an online database
title_short Longitudinal analysis of risk factors for dementia based on Mild Cognitive Impairment Screen results and questionnaire responses from healthy Japanese individuals registered in an online database
title_sort longitudinal analysis of risk factors for dementia based on mild cognitive impairment screen results and questionnaire responses from healthy japanese individuals registered in an online database
topic Online registry
Risk factors
Dementia
Cognitive function
Sleep
url https://doi.org/10.1016/j.trci.2019.06.003
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