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WFRF:(Börjesson Hanson Anne 1959)
 

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Dementia and other mental disorders among 95-year olds

Börjesson-Hanson, Anne, 1959 (author)
Gothenburg University,Göteborgs universitet,Institutionen för neurovetenskap och fysiologi, sektionen för psykiatri och neurokemi,Institute of Neuroscience and Physiology, Department of Psychiatry and Neurochemistry
 (creator_code:org_t)
ISBN 9789162874391
2008
English.
  • Doctoral thesis (other academic/artistic)
Abstract Subject headings
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  • The aims of this study were to estimate the prevalence of mental disorders and age related differences in the very elderly. In addition, five-year mortality after age 95 in relation to dementia and cognitive function in non-demented, was examined. A population sample of 338 95-year olds (response rate 65%) living in Gothenburg, Sweden, was compared with 85- (N=494) and 75-year olds (N=303) from the same birth cohort. All participants were examined by psychiatrists. The assessments included the Comprehensive Psychopathological Rating Scale, cognitive tests, the Mini Mental State Examination (MMSE), medical history, physical examination and a telephone interview with a key informant. Dementia, depression, anxiety and psychosis were classified according to DSM-III-R criteria, Alzheimer?s disease according to NINCDS-ADRDA criteria and vascular dementia (VaD) according to NINDS-AIREN criteria. Two-thirds (66%) of the 95-year olds fulfilled criteria for a mental disorder. Dementia was more common (52% vs. 30%; p<0.001) and more severe in 95-year olds than in 85-year olds. Among 95-year olds, dementia was more common in women than in men (56% vs. 37%; p=0.006). The proportion of VaD was lower among 95-year olds than among 85-year olds (30% vs. 40%; p<0.001). Almost one-third (29%) of the non-demented 95-year olds had a psychiatric disorder (depression 17%, anxiety disorders 9%, psychotic disorder 7%). Psychotic symptoms among non-demented 95-year olds were not associated with other psychiatric symptoms, sensory impairments or cognitive function. The prevalence of psychiatric disorders among non-demented was higher for 85- and 95-year olds than for 75-year olds. Five-year survival after age 95 was similar in men and women, but when controlling for dementia, male sex predicted mortality. Dementia was the leading predictor for death after age 95 and attributed to 40% of deaths. For each point increase in the MMSE score among the non-demented 95-year olds, mortality decreased by 13% (RR 0.87; p<0.0002). The high prevalence of psychiatric disorders emphasizes the importance of detecting and treating psychiatric problems among the oldest old, and also the need for further research on mental health in this age group. There is a concern that psychiatric symptoms among the very old are considered ?normal for age? and therefore neglected by the patients themselves, their relatives and health care professionals.

Keyword

nonagenarians
95-year-olds
dementia
Alzheimer?s disease
vascular dementia
depression
anxiety
psychotic
paranoid ideation
cognitive function
mortality
population attributable risk
population study
prevalence
epidemiology
oldest old
very elderly

Publication and Content Type

vet (subject category)
dok (subject category)

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