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Balzer-Geldsetzer, Monika; Ferreira, Joaquim; Odin, Per; Bloem, Bastiaan R.; Meissner, Wassilios G.; Lorenzl, Stefan; Wittenberg, Michael; Dodel, Richard; Schrag, Anette (2018): Study protocol: Care of Late-Stage Parkinsonism (CLaSP): a longitudinal cohort study. In: BMC Neurology 18:185
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Abstract

Background: Parkinson's disease (PD) is a chronic progressive disorder leading to increasing disability. While the symptoms and needs of patients in the early stages of their disease are well characterized, little information is available on patients in the late stage of the disease.Methods/designThe Care of Late-Stage Parkinsonism (CLaSP) study is a longitudinal, multicenter, prospective cohort study to assess the needs and provision of care for patients with late stage Parkinsonism and their carers in six European countries (UK, France, Germany, Netherlands, Portugal, Sweden). In addition, it will compare the effectiveness of different health and social care systems. Patients with Parkinsonism with Hoehn and Yahr stage IV in the On-state or Schwab and England stage 50% or less are evaluated at baseline and three follow-up time-points. Standardised questionnaires and tests are applied for detailed clinical, neuropsychological, behavioural and health-economic assessments. A qualitative study explores the health care needs and experiences of patients and carers, and an interventional sub-study evaluates the impact of specialist recommendations on theiroutcomes.Discussion: Through the combined assessment of a range of quantitative measures and qualitative assessments of patients with late stage parkinsonism, this study will provide for the first timecomprehensive and in-depth information on the clinical presentation, needs and health care provision in this population in Europe, and lay the foundation for improved outcomes in these patients.Trial registrationThe protocol was registered at ClinicalTrials.gov as NCT02333175 on 07/01/2015.