Almeida, Osvaldo P., McCaul, Kieran, Hankey, Graeme J., Yeap, Bu B., Golledge, Jonathan, and Flicker, Leon (2016) Risk of dementia and death in community-dwelling older men with bipolar disorder. The British Journal of Psychiatry, 209 (2). pp. 121-126.

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Abstract

Background: Bipolar disorder has been associated with cognitive decline, but confirmatory evidence from a community-derived sample of older people is lacking.

Aims: To investigate the 13-year risk of dementia and death in older adults with bipolar disorder.

Method: Cohort study of 37 768 men aged 65-85 years. Dementia (primary) and death (secondary), as recorded by electronic record linkage, were the outcomes of interest.

Results: Bipolar disorder was associated with increased adjusted hazard ratio (HR) of dementia (HR=2.30, 95% CI 1.80-2.94). The risk of dementia was greatest among those with <5 years of history of bipolar disorder or who had had illness onset after 70 Steers of age. Bipolar disorder was also associated with increased mortality (HR=1.51, 95% CI 1.28-1.77). Competing risk regression showed that bipolar disorder was associated with increased hazard of death by suicide, accidents, pneumonia or influenza, and diseases of the liver and digestive system.

Conclusions: Bipolar disorder in later life is associated with increased risk of dementia and premature death.

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