Prevalence of Parkinson's disease: a population-based study in Portugal.

Abstract:

BACKGROUND AND PURPOSE:Portugal has been identified as one of the countries with a high prevalence of LRRK2-G2019S, considered to be the most frequent known cause of familial and sporadic Parkinson's disease (PD). The aim of this study was to evaluate the prevalence of PD in Portugal using a door-to-door methodology. METHODS:A cross-sectional study was conducted in the Portuguese community-dwelling population; that is, elderly people living in the community on their own, aged ≥50 years and resident in mainland Portugal, in two phases: (i) a questionnaire was applied to screen potential cases of PD; and (ii) screened cases were evaluated by an expert in PD to confirm diagnosis. RESULTS:The adjusted prevalence of PD for the Portuguese community-dwelling population aged ≥50 years was 0.24%. The estimated total number of cases of PD for the Portuguese population is 180/100 000 inhabitants. CONCLUSIONS:The results of this study show that a geographical region with a high frequency of a causal mutation for PD does not automatically imply a high prevalence of patients with PD.

journal_name

Eur J Neurol

authors

Ferreira JJ,Gonçalves N,Valadas A,Januário C,Silva MR,Nogueira L,Vieira JLM,Lima AB

doi

10.1111/ene.13273

subject

Has Abstract

pub_date

2017-05-01 00:00:00

pages

748-750

issue

5

eissn

1351-5101

issn

1468-1331

journal_volume

24

pub_type

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