日本語フィールド
著者：Chiaki Ikejima, Akito Hisanaga, Yutaka Kiyohara, Tomoyuki Ohara, Manabu Ikeda, Tomohisa Ishikawa, Shinji Ouma, Kenji Nakashima, Kenji Wada, Shigeto Yamada, Itaru Watanabe, Tatsuyuki Kakuma, Ayako Takamori, Tetsuaki Arai, Takash Asada題名：Multicentre population-based dementia prevalence survey in Japan発表情報：Alzheimer's & Dementia; 2013, 9, 688キーワード：概要：抄録：Background
In Japan, life expectancy is now higher than in any other country, and society has been ageing with remarkable speed. Therefore, we investigated the prevalence and illnesses causing dementia and the use of social services to perceive issues facing Japanese communities.
Methods
The first wave survey was performed in four rural areas between October 2009 and September 2010, and the second wave survey was performed in three urban areas between October 2011 and September 2012. The study included a psychiatric interview; physical, neurologic, and neuropsychological examinations; comprehensive laboratory tests, and cranial computed tomography. Dementia was defined according to DSM-, NINCDS-ADRDA, NINDS-AIREN, Revised CDLB guideline, Lund-Manchester diagnostic criteria for FTD.
Results
In total, a sample of 7,190 elderly subjects was selected based on the census data, and 4,924 participants were examined (participation rate: 68.5%). 932 dementia cases and 718 mild cognitive impairment cases were identified. Of the illnesses causing dementia, Alzheimer's disease was the most frequent (60.8%), followed by vascular dementia (17.3%), dementia with Lewy body disease (4.3%), mixed dementia (1.5%) and other illnesses. The prevalence of dementia according to 5-year age strata between 65 and 99 years was 5.8–77.7% among the participants.
Conclusions
The prevalence of dementia in this study was higher than in previous reports in Japan and other countries. There are several possible reasons for our results. The main reason is the increasing number of subjects in the elderly population, in particular, the oldest- old group. Another possible reason is that early detection of mild dementia has improved. As a result, very mild dementia cases that might have been overlooked 20 years ago can now be detected.英語フィールド
Author：Chiaki Ikejima, Akito Hisanaga, Yutaka Kiyohara, Tomoyuki Ohara, Manabu Ikeda, Tomohisa Ishikawa, Shinji Ouma, Kenji Nakashima, Kenji Wada, Shigeto Yamada, Itaru Watanabe, Tatsuyuki Kakuma, Ayako Takamori, Tetsuaki Arai, Takash AsadaTitle：O4–04–03: Multicentre population-based dementia prevalence survey in JapanAnnouncement information:Alzheimer's & Dementia; 2013, 9, 688An abstract：Background
In Japan, life expectancy is now higher than in any other country, and society has been ageing with remarkable speed. Therefore, we investigated the prevalence and illnesses causing dementia and the use of social services to perceive issues facing Japanese communities.
Methods
The first wave survey was performed in four rural areas between October 2009 and September 2010, and the second wave survey was performed in three urban areas between October 2011 and September 2012. The study included a psychiatric interview; physical, neurologic, and neuropsychological examinations; comprehensive laboratory tests, and cranial computed tomography. Dementia was defined according to DSM-, NINCDS-ADRDA, NINDS-AIREN, Revised CDLB guideline, Lund-Manchester diagnostic criteria for FTD.
Results
In total, a sample of 7,190 elderly subjects was selected based on the census data, and 4,924 participants were examined (participation rate: 68.5%). 932 dementia cases and 718 mild cognitive impairment cases were identified. Of the illnesses causing dementia, Alzheimer's disease was the most frequent (60.8%), followed by vascular dementia (17.3%), dementia with Lewy body disease (4.3%), mixed dementia (1.5%) and other illnesses. The prevalence of dementia according to 5-year age strata between 65 and 99 years was 5.8–77.7% among the participants.
Conclusions
The prevalence of dementia in this study was higher than in previous reports in Japan and other countries. There are several possible reasons for our results. The main reason is the increasing number of subjects in the elderly population, in particular, the oldest- old group. Another possible reason is that early detection of mild dementia has improved. As a result, very mild dementia cases that might have been overlooked 20 years ago can now be detected.