title: Analysis of causal relationships by structural equation modeling to determine the factors influencing cognitive function in elderly people in Japan.
abstract: The purpose of this study is to identify a potentiality factor that is a preventive factor for decline in cognitive function. Additionally, this study pursues to clarify the causal relationship between the each potential factor and its influence on cognitive function. Subjects were 366 elderly community residents (mean age 73.7 ± 6.4, male 51, female 315) who participated in the Taketoyo Project from 2007 to 2011. Factor analysis was conducted to identify groupings within mental, social, life, physical and cognitive functions. In order to detect clusters of 14 variables, the item scores were subjected to confirmatory factor analysis. We performed Structural Equation Modeling analysis to calculate the standardization coefficient and correlation coefficient for every factor. The cause and effect hypothesis model was used to gather two intervention theory hypotheses for dementia prevention (direct effect, indirect effect) in one system. Finally, we performed another Structural Equation Modeling analysis to calculate the standardization of the cause and effect hypothesis model. Social participation was found to be activated by the improvement of four factors, and in turn, activated "Social participation" acted on cognitive function.
authors: Division of Occupational Therapy, Faculty of Care and Rehabilitation, Seijoh University, Tokai, Aichi, Japan; Division of Health Science, Graduate School of Medical Science, Kanazawa University, Tokai, Aichi, Japan.
authors: Daisuke
authors: D
authors: Kimura
authors: Department of Rehabilitation Sciences, Faculty of Allied Health Sciences, Kansai University of Welfare Sciences, Kashiwara, Osaka, Japan.
authors: Ken
authors: K
authors: Nakatani
authors: Division of Occupational Therapy, Faculty of Care and Rehabilitation, Seijoh University, Tokai, Aichi, Japan.
authors: Tokunori
authors: T
authors: Takeda
authors: Division of Occupational Therapy, Faculty of Care and Rehabilitation, Seijoh University, Tokai, Aichi, Japan.
authors: Takashi
authors: T
authors: Fujita
authors: School of Health Sciences, College of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan.
authors: Nobuyuki
authors: N
authors: Sunahara
authors: School of Health Sciences, College of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan.
authors: Katsumi
authors: K
authors: Inoue
authors: School of Health Sciences, College of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan.
authors: Masako
authors: M
authors: Notoya
mesh_terms: D000203:Activities of Daily Living; D000368:Aged; D000369:Aged, 80 and over; D003071:Cognition / Q000502:physiology*; D003704:Dementia / Q000517:prevention & control; D005163:Factor Analysis, Statistical; D005260:Female; D006304:Health Status; D006801:Humans; D007564:Japan; D008297:Male; D008962:Models, Theoretical