Long-Tailed Duration Distributions for Disability in Aged People
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- Moriyama Osamu
- Department of Physics, Chuo University
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- Itoh Hiroto
- Department of Physics, Chuo University
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- Matsushita Satoru
- Tokyo Metropolitan Geriatric Hospital
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- Matsushita Mitsugu
- Department of Physics, Chuo University
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Long tails of the duration distributions for disabilities in the aged are analyzed. Log–normal distribution shows excellent fit with various data on the durations of disabilities, irrespective of their severity. Persisting long tails suggest the fractal nature of disability distributions. For approximately 60% of the patients, the duration distributions are also mimicked by the first passage time distribution (FPTD) of one-dimensional Brownian motion. The finding that the data fit the log–normal distribution very well and FPTD fairly well reveals disability for the aged to be a stochastic process of suffering successively from various endogenous diseases, i.e., multiple pathology.
収録刊行物
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- Ｊｏｕｒｎａｌ ｏｆ ｔｈｅ Ｐｈｙｓｉｃａｌ Ｓｏｃｉｅｔｙ ｏｆ Ｊａｐａｎ
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Ｊｏｕｒｎａｌ ｏｆ ｔｈｅ Ｐｈｙｓｉｃａｌ Ｓｏｃｉｅｔｙ ｏｆ Ｊａｐａｎ 72 (10), 2409-2412, 2003
一般社団法人 日本物理学会
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詳細情報 詳細情報について
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- CRID
- 1390001204186491136
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- NII論文ID
- 210000104462
- 110001954239
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- NII書誌ID
- AA00704814
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- BIBCODE
- 2003JPSJ...72.2409M
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- ISSN
- 13474073
- 00319015
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- NDL書誌ID
- 6713265
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可
