Incidence of Parkinson’s disease in Norway: the Norwegian ParkWest study
Identifieur interne : 000A61 ( Main/Exploration ); précédent : 000A60; suivant : 000A62Incidence of Parkinson’s disease in Norway: the Norwegian ParkWest study
Auteurs : G. Alves [Norvège] ; B. Müller [Norvège] ; K. Herlofson [Norvège] ; I. Hogenesch [Norvège] ; W. Telstad [Norvège] ; D. Aarsland [Norvège] ; O-B Tysnes [Norvège] ; J P Larsen [Norvège]Source :
- Journal of Neurology, Neurosurgery & Psychiatry [ 0022-3050 ] ; 2009-08.
Abstract
Objective: To present the incidence of Parkinson’s disease (PD) in Norway and to explore gender influences on incidence and age at onset, as well as severity and pattern of parkinsonism at the time of diagnosis in a representative drug naïve cohort with newly diagnosed PD. Methods: In four Norwegian counties comprising a base population of 1 052 075 inhabitants, multiple sources of case ascertainment and a four step diagnostic procedure were used to establish a representative cohort of patients with incident PD at a high level of diagnostic accuracy. Of a total of 604 subjects referred to the study, 265 individuals fulfilled the clinical research criteria of PD at their latest clinical visit, at a mean 28 months after identification. Results: The incidence of PD in the study area, age standardised to the 1991 European standard population, was 12.6/105yr-1 (95% CI 11.1 to 14.2). The overall age standardised male to female ratio was 1.58 (95% CI 1.22 to 2.06), with a consistent male preponderance throughout all age groups. Clinical onset of PD was later in women than in men (68.6 vs 66.3 years; p = 0.062) whereas severity and pattern of parkinsonism in drug naïve patients was not different between genders at the time of diagnosis. Conclusion: Incidence rates of PD in Norway are similar to those in other Western European and American countries. Female gender was associated with a considerably lower risk of PD and slightly delayed motor onset but had no impact on severity of parkinsonism or clinical phenotype in incident drug naïve PD, suggesting that the female gender influences on the nigrostriatal system are most pronounced in the preclinical phase of the disease.
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DOI: 10.1136/jnnp.2008.168211
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Methods: In four Norwegian counties comprising a base population of 1 052 075 inhabitants, multiple sources of case ascertainment and a four step diagnostic procedure were used to establish a representative cohort of patients with incident PD at a high level of diagnostic accuracy. Of a total of 604 subjects referred to the study, 265 individuals fulfilled the clinical research criteria of PD at their latest clinical visit, at a mean 28 months after identification. Results: The incidence of PD in the study area, age standardised to the 1991 European standard population, was 12.6/105yr-1 (95% CI 11.1 to 14.2). The overall age standardised male to female ratio was 1.58 (95% CI 1.22 to 2.06), with a consistent male preponderance throughout all age groups. Clinical onset of PD was later in women than in men (68.6 vs 66.3 years; p = 0.062) whereas severity and pattern of parkinsonism in drug naïve patients was not different between genders at the time of diagnosis. Conclusion: Incidence rates of PD in Norway are similar to those in other Western European and American countries. Female gender was associated with a considerably lower risk of PD and slightly delayed motor onset but had no impact on severity of parkinsonism or clinical phenotype in incident drug naïve PD, suggesting that the female gender influences on the nigrostriatal system are most pronounced in the preclinical phase of the disease.</div></front></TEI><affiliations><list><country><li>Norvège</li></country></list><tree><country name="Norvège"><noRegion><name sortKey="Alves, G" sort="Alves, G" uniqKey="Alves G" first="G" last="Alves">G. Alves</name></noRegion><name sortKey="Aarsland, D" sort="Aarsland, D" uniqKey="Aarsland D" first="D" last="Aarsland">D. Aarsland</name><name sortKey="Aarsland, D" sort="Aarsland, D" uniqKey="Aarsland D" first="D" last="Aarsland">D. Aarsland</name><name sortKey="Aarsland, D" sort="Aarsland, D" uniqKey="Aarsland D" first="D" last="Aarsland">D. Aarsland</name><name sortKey="Alves, G" sort="Alves, G" uniqKey="Alves G" first="G" last="Alves">G. Alves</name><name sortKey="Herlofson, K" sort="Herlofson, K" uniqKey="Herlofson K" first="K" last="Herlofson">K. Herlofson</name><name sortKey="Hogenesch, I" sort="Hogenesch, I" uniqKey="Hogenesch I" first="I" last="Hogenesch">I. Hogenesch</name><name sortKey="Larsen, J P" sort="Larsen, J P" uniqKey="Larsen J" first="J P" last="Larsen">J P Larsen</name><name sortKey="Larsen, J P" sort="Larsen, J P" uniqKey="Larsen J" first="J P" last="Larsen">J P Larsen</name><name sortKey="Larsen, J P" sort="Larsen, J P" uniqKey="Larsen J" first="J P" last="Larsen">J P Larsen</name><name sortKey="Muller, B" sort="Muller, B" uniqKey="Muller B" first="B" last="Müller">B. Müller</name><name sortKey="Muller, B" sort="Muller, B" uniqKey="Muller B" first="B" last="Müller">B. Müller</name><name sortKey="Telstad, W" sort="Telstad, W" uniqKey="Telstad W" first="W" last="Telstad">W. Telstad</name><name sortKey="Tysnes, O B" sort="Tysnes, O B" uniqKey="Tysnes O" first="O-B" last="Tysnes">O-B Tysnes</name><name sortKey="Tysnes, O B" sort="Tysnes, O B" uniqKey="Tysnes O" first="O-B" last="Tysnes">O-B Tysnes</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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