Greater risk of dementia when spouse has dementia? The Cache County study.

Abstract:

OBJECTIVES:To examine the effects of caring for a spouse with dementia on the caregiver's risk for incident dementia. DESIGN:Population-based study of incident dementia in spouses of persons with dementia. SETTING:Rural county in northern Utah. PARTICIPANTS:Two thousand four hundred forty-two subjects (1,221 married couples) aged 65 and older. MEASUREMENTS:Incident dementia was diagnosed in 255 subjects, with onset defined as age when subject met Diagnostic and Statistical Manual of Mental Disorders, Third Edition, Revised, criteria for dementia. Cox proportional hazards regression tested the effect of time-dependent exposure to dementia in one's spouse, adjusted for potential confounders. RESULTS:A subject whose spouse experienced incident dementia onset had a six times greater risk for incident dementia as subjects whose spouses were dementia free (hazard rate ratio (HRR)=6.0, 95% confidence interval (CI)=2.2-16.2, P<.001). In sex-specific analyses, husbands had higher risks (HRR=11.9, 95% CI=1.7-85.5, P=.01) than wives (HRR=3.7, 95% CI=1.2-11.6, P=.03). CONCLUSION:The chronic and often severe stress associated with dementia caregiving may exert substantial risk for the development of dementia in spouse caregivers. Additional (not mutually exclusive) explanations for findings are discussed.

journal_name

J Am Geriatr Soc

authors

Norton MC,Smith KR,Østbye T,Tschanz JT,Corcoran C,Schwartz S,Piercy KW,Rabins PV,Steffens DC,Skoog I,Breitner JC,Welsh-Bohmer KA,Cache County Investigators.

doi

10.1111/j.1532-5415.2010.02806.x

subject

Has Abstract

pub_date

2010-05-01 00:00:00

pages

895-900

issue

5

eissn

0002-8614

issn

1532-5415

pii

JGS2806

journal_volume

58

pub_type

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