Nippon Ronen Igakkai Zasshi. Japanese Journal of Geriatrics
Print ISSN : 0300-9173
Original Articles
Association between homebound status and newly certified need of care among elderly in a rural community: The Iwate-Kenpoku cohort (Iwate-KENCO) study
Hirohide YokokawaSeiji YasumuraKozo TannoMasaki OhsawaToshiyuki OnodaKazuyoshi ItaiKazuko KawamuraKiyomi Sakata
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2009 Volume 46 Issue 5 Pages 447-457

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Abstract

Objective: The purpose of this study was to evaluate the association between homebound status and newly certificated need of care among elderly in a rural community and to clarify the characteristics of those in homebound status.
Methods: The Iwate-KENpoku COhort (Iwate-KENCO) study (26,469 participants) spanned the period from 2002 to 2004 and was conducted in northern Iwate Prefecture, Japan. In the present study, 12,056 elderly (men, 4,751; women, 7,305) participated after being screened for eligibility (≥65 years of age; without certification for need of care; and without a history of stroke, cardiac heart failure, or ischemic heart disease). Being homebound was operationally defined as walking outdoors for less than 5 minutes per day. Cox's proportional hazard model was used to estimate the hazard risk (HR) for newly certificated need of care and the 95% confidence interval (95% CI) after controlling for confounding factors by gender.
Results: After a mean follow-up period of 2.65 years, 200 men (4.2%) and 412 women (5.6%) obtained certification for need of care. Homebound status was significantly associated with newly certified need of care in women (HR=1.64, 95%CI=1.29-2.09), but not in men (HR=1.07, 95%CI=0.76-1.52). Homebound status among elderly women was associated with nutritional status, missing teeth, and irregular daily rhythms.
Conclusion: These findings suggest that being homebound is a risk factor for elderly women receiving certification for need of care.

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© 2009 The Japan Geriatrics Society
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