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  • Title: High risk of developing dementia in Parkinson's disease: a Swedish registry-based study.
    Author: Åström DO, Simonsen J, Raket LL, Sgarbi S, Hellsten J, Hagell P, Norlin JM, Kellerborg K, Martinez-Martin P, Odin P.
    Journal: Sci Rep; 2022 Oct 06; 12(1):16759. PubMed ID: 36202962.
    Abstract:
    Dementia have substantial negative impact on the affected individual, their care partners and society. Persons living with Parkinson's disease (PwP) are also to a large extent living with dementia. The aim of this study is to estimate time to dementia in PD using data from a large quality register with access to baseline clinical and patient reported data merged with Swedish national health registries. Persons with Parkinson's disease in the Swedish Neuro Registries/Parkinson's Disease Swedish PD Registry (PARKreg) in Sweden were included and linked to national health registries and matched by sex and age to controls without PD. Time to dementia was analysed with Cox regression models assuming proportional hazards, with time since diagnosis as the underlying time variable. In this large prospective cohort study, PwP had approximately four times higher risk of developing dementia as compared to age and sex-matched controls, a finding which remained after adjusting for potential confounders. The present results underline the high risk of dementia in PD and further emphasize the importance of developing symptomatic and ultimately disease modifying strategies to counteract this part of the non-motor symptomatology in PD.
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