| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2011: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
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| Outline of Final Research Achievements |
This was a prospective cohort study which aimed to investigate relationships between tooth loss and cognitive impairment. We also developed the Japanese version of the 15D, which was a comprehensive health-related quality of life questionnaire. The subjects were 4427 community-dwelling independent elderly people at baseline. We performed a follow-up examination in the fifth year. We observed a significant association between total tooth loss, progression to edentulism in the group with a few number of teeth, and the development of mild memory impairment, even after adjustment for confounding factors. Because of the short time required to complete the Japanese 15D and the significant relationships between the 15D and higher-level functional capacity, the acceptability and validity of the Japanese 15D were considered to be sufficient.
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