• Rob Butler, Martin Orrell, Obioha C Ukoumunne, and Paul Bebbington.
• Department of Psychiatry, University of Auckland, Auckland, New Zealand. robbutler100@hotmail.com
• Aust N Z J Psychiatry. 2004 Sep 1; 38 (9): 702-5.

ObjectivesTo examine the relationship between life events and survival for people with dementia. To investigate whether this relationship differs from that for people without dementia. To identify which psychiatric and social factors are associated with survival in people with dementia.MethodA prospective cohort study with external controls. One hundred and sixteen people with dementia and 50 fit, elderly controls were assessed for life events over a 6-month period. They were followed-up at 5 years and data collected on length of survival.ResultsThere was an association between two or more severe life events and reduced survival. This association appeared stronger for controls than people with dementia although the interaction was not significant (p = 0.052). The only psychiatric or social factor associated with poor survival in dementia was depression. Other factors associated with reduced survival in the dementia group were male sex, older age, poor physical health, later age of onset and a poorer level of functioning.ConclusionsThis study provides some evidence that having two or more stressful and negative life events may reduce survival in older people with and without dementia. If replicated, this finding will have implications for our understanding of the clinical course of dementia.

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