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Stocchi F, Barone P, Ceravolo R, De Pandis MF, Lopiano L, Modugno N, Padovani A, Pilleri M, Tessitore A, Zappia M. Advanced Parkinson's disease treatment patterns in Italy: an observational study interim analysis. Ann Med 2024; 56:2315226. [PMID: 38381654 PMCID: PMC10883087 DOI: 10.1080/07853890.2024.2315226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 02/01/2024] [Indexed: 02/23/2024] Open
Abstract
BACKGROUND Oral levodopa remains the mainstay of treatment for Parkinson's disease (PD). However, as PD progresses, response to treatment may fluctuate. Managing fluctuations can be demanding for clinicians and patients. There is a paucity of real-world studies reporting on PD management in patients with fluctuations in treatment response, especially in patients with advanced stages of PD. The multicentre, observational Parkinson's Disease Fluctuations treatment PAthway (PD-FPA) study describes the real-life management of response fluctuations in Italian patients with advanced PD. PATIENTS AND METHODS PD-FPA had a retrospective and prospective phase; herein, retrospective results are presented. Ten Italian centres enrolled patients with a PD diagnosis from 10-15 years prior to study entry (T0) and who had ≥2-year history of fluctuations. Data on patient demographics, medical history, PD stage, fluctuation characteristics, symptoms, and prescribed treatments were collected at T0 and retrospectively (2 years prior to T0) via patient chart review/interview. RESULTS Overall, 296 patients (60% male, mean age 68 years, 84% with Hoehn and Yahr scores 2-3) were enrolled. At T0, most patients (99.3%) were on oral levodopa therapy. All patients used dopaminergic medications; adjunctive medications included dopamine agonists (56%) and monoamine oxidase B (60%) and catechol-O-methyltransferase enzyme inhibitors (41%). At T0, 51% of patients had changed therapy, with response fluctuations being the most common reason (74%); wearing-off was the most common fluctuation (83%). CONCLUSION This interim analysis of PD-FPA suggests that adequate levodopa dosing and adjunctive medications can stabilize advanced PD and provide patients with a good quality of life.
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Affiliation(s)
- Fabrizio Stocchi
- Department of Neurology, University San Raffaele Roma and IRCCS San Raffaele, Rome, Italy
| | - Paolo Barone
- Centro per le Malattie Neurodegenerative, Dipartimento di Medicina, Università di Salerno, Baronissi, Salerno, Italy
| | - Roberto Ceravolo
- Neurodegenerative Disease Center, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Maria Francesca De Pandis
- Department of Human Sciences and Promotion of Quality of Life, San Raffaele University, Roma, Italy
- San Raffaele Cassino Hospital, Cassino, Italy
| | - Leonardo Lopiano
- Department of Neuroscience Rita Levi-Montalcini, University of Turin AOU Città della Salute e della Scienza, Turin, Italy
| | | | - Alessandro Padovani
- Unità di Neurologia, Dipartimento Scienze Cliniche e Sperimentali, Università degli Studi di Brescia, Brescia, Italy
| | - Manuela Pilleri
- UO Neurologia Casa di Cura Villa Margherita, Arcugnano Vicenza, Italy and Centro Parkinson e Parkinsonismi, ASST Gaetano Pini CTO, Milano, Italy
| | - Alessandro Tessitore
- Department of Advanced Medical and Surgical Sciences, University of Campania "L. Vanvitelli", Naples, Italy
| | - Mario Zappia
- Department "G.F. Ingrassia", University of Catania, Catania, Italy
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Moes HR, Dafsari HS, Jost WH, Kovacs N, Pirtošek Z, Henriksen T, Falup-Pecurariu C, Minár M, Buskens E, van Laar T. Grasping the big picture: impact analysis of screening tools for timely referral for device-aided therapies. J Neural Transm (Vienna) 2024:10.1007/s00702-024-02783-1. [PMID: 39007919 DOI: 10.1007/s00702-024-02783-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Accepted: 05/03/2024] [Indexed: 07/16/2024]
Abstract
Several screening tools are available to assist general neurologists in the timely identification of patients with advanced Parkinson's disease (PD) who may be eligible for referral for a device-aided therapy (DAT). However, it should be noted that not all of these clinical decision rules have been developed and validated in a thorough and consistent manner. Furthermore, only a limited number of head-to-head comparisons have been performed. Available studies suggest that D-DATS has a higher positive predictive value and higher specificity than the 5-2-1 criteria, while the sensitivity of both screening tools is similar. However, unanswered questions remain regarding the validity of the decision rules, such as whether the diagnostic performance measures from validation studies are generalizable to other populations. Ultimately, the question is whether a screening tool will effectively and efficiently improve the quality of life of patients with PD. To address this key question, an impact analysis should be performed. The authors intend to set up a multinational cluster randomised controlled trial to compare the D-DATS and 5-2-1 criteria on the downstream consequences of implementing these screening tools, with a particular focus on the impact on disability and quality of life.
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Affiliation(s)
- H R Moes
- Department of Neurology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
| | - H S Dafsari
- Department of Neurology, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - W H Jost
- Parkinson-Klinik Ortenau, Kreuzbergstr. 12‑16, Wolfach, 77709, Germany
| | - N Kovacs
- Department of Neurology, University of Pecs, Medical School, 48-as tér 1, Pecs, Hungary
| | - Z Pirtošek
- Department of Neurology, University Medical Center, Ljubljana, Slovenia
- Department of Neurology, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - T Henriksen
- Movement Disorder Clinic, University Hospital of Bispebjerg, Copenhagen, Denmark
| | - C Falup-Pecurariu
- Department of Neurology, Faculty of Medicine, County Clinic Hospital, Faculty of Medicine, Transylvania University, Braşov, Romania
| | - M Minár
- Second Department of Neurology, Faculty of Medicine, Comenius University Bratislava, Bratislava, Slovakia
| | - E Buskens
- Department of Epidemiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - T van Laar
- Department of Neurology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
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Zhu SG, Chen ZL, Xiao K, Wang ZW, Lu WB, Liu RP, Huang SS, Zhu JH, Zhang X, Wang JY. Association analyses of apolipoprotein E genotypes and cognitive performance in patients with Parkinson's disease. Eur J Med Res 2024; 29:334. [PMID: 38880878 PMCID: PMC11181540 DOI: 10.1186/s40001-024-01924-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2024] [Accepted: 06/06/2024] [Indexed: 06/18/2024] Open
Abstract
BACKGROUND Cognitive impairment is a common non-motor symptom of Parkinson's disease (PD). The apolipoprotein E (APOE) ε4 genotype increases the risk of Alzheimer's disease (AD). However, the effect of APOEε4 on cognitive function of PD patients remains unclear. In this study, we aimed to understand whether and how carrying APOEε4 affects cognitive performance in patients with early-stage and advanced PD. METHODS A total of 119 Chinese early-stage PD patients were recruited. Movement Disorder Society Unified Parkinson's Disease Rating Scale, Hamilton anxiety scale, Hamilton depression scale, non-motor symptoms scale, Mini-mental State Examination, Montreal Cognitive Assessment, and Fazekas scale were evaluated. APOE genotypes were determined by polymerase chain reactions and direct sequencing. Demographic and clinical information of 521 early-stage and 262 advanced PD patients were obtained from Parkinson's Progression Marker Initiative (PPMI). RESULTS No significant difference in cognitive performance was found between ApoEε4 carriers and non-carriers in early-stage PD patients from our cohort and PPMI. The cerebrospinal fluid (CSF) Amyloid Beta 42 (Aβ42) level was significantly lower in ApoEε4 carrier than non-carriers in early-stage PD patients from PPMI. In advanced PD patients from PPMI, the BJLOT, HVLT retention and SDMT scores seem to be lower in ApoEε4 carriers without reach the statistical significance. CONCLUSIONS APOEε4 carriage does not affect the cognitive performance of early-stage PD patients. However, it may promote the decline of CSF Aβ42 level and the associated amyloidopathy, which is likely to further contribute to the cognitive dysfunction of PD patients in the advanced stage.
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Affiliation(s)
- Shi-Guo Zhu
- Department of Neurology, Institute of Geriatric Neurology, the Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, 325027, Zhejiang, China
| | - Zhu-Ling Chen
- Department of Neurology, Institute of Geriatric Neurology, the Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, 325027, Zhejiang, China
| | - Ke Xiao
- Department of Neurology, Institute of Geriatric Neurology, the Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, 325027, Zhejiang, China
| | - Zi-Wei Wang
- Department of Neurology, Institute of Geriatric Neurology, the Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, 325027, Zhejiang, China
| | - Wen-Bin Lu
- Department of Neurology, Institute of Geriatric Neurology, the Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, 325027, Zhejiang, China
| | - Rong-Pei Liu
- Department of Neurology, Institute of Geriatric Neurology, the Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, 325027, Zhejiang, China
| | - Shi-Shi Huang
- Department of Neurology, Institute of Geriatric Neurology, the Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, 325027, Zhejiang, China
| | - Jian-Hong Zhu
- Department of Preventive Medicine, Institute of Nutrition and Diseases, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China.
| | - Xiong Zhang
- Department of Neurology, Institute of Geriatric Neurology, the Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, 325027, Zhejiang, China.
| | - Jian-Yong Wang
- Department of Neurology, Institute of Geriatric Neurology, the Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, 325027, Zhejiang, China.
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Godoy Junior CA, Miele F, Mäkitie L, Fiorenzato E, Koivu M, Bakker LJ, Groot CUD, Redekop WK, van Deen WK. Attitudes Toward the Adoption of Remote Patient Monitoring and Artificial Intelligence in Parkinson's Disease Management: Perspectives of Patients and Neurologists. THE PATIENT 2024; 17:275-285. [PMID: 38182935 DOI: 10.1007/s40271-023-00669-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 12/10/2023] [Indexed: 01/07/2024]
Abstract
OBJECTIVE Early detection of Parkinson's Disease (PD) progression remains a challenge. As remote patient monitoring solutions (RMS) and artificial intelligence (AI) technologies emerge as potential aids for PD management, there's a gap in understanding how end users view these technologies. This research explores patient and neurologist perspectives on AI-assisted RMS. METHODS Qualitative interviews and focus-groups were conducted with 27 persons with PD (PwPD) and six neurologists from Finland and Italy. The discussions covered traditional disease progression detection and the prospects of integrating AI and RMS. Sessions were recorded, transcribed, and underwent thematic analysis. RESULTS The study involved five individual interviews (four Italian participants and one Finnish) and six focus-groups (four Finnish and two Italian) with PwPD. Additionally, six neurologists (three from each country) were interviewed. Both cohorts voiced frustration with current monitoring methods due to their limited real-time detection capabilities. However, there was enthusiasm for AI-assisted RMS, contingent upon its value addition, user-friendliness, and preservation of the doctor-patient bond. While some PwPD had privacy and trust concerns, the anticipated advantages in symptom regulation seemed to outweigh these apprehensions. DISCUSSION The study reveals a willingness among PwPD and neurologists to integrate RMS and AI into PD management. Widespread adoption requires these technologies to provide tangible clinical benefits, remain user-friendly, and uphold trust within the physician-patient relationship. CONCLUSION This study offers insights into the potential drivers and barriers for adopting AI-assisted RMS in PD care. Recognizing these factors is pivotal for the successful integration of these digital health tools in PD management.
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Affiliation(s)
- Carlos Antonio Godoy Junior
- Erasmus School of Health Policy and Management, Erasmus University Rotterdam, Burgemeester Oudlaan 50, 3062 PA, Rotterdam, Netherlands.
| | - Francesco Miele
- Department of Political and Social Sciences, University of Trieste, Trieste, Italy
| | - Laura Mäkitie
- Department of Neurology, Brain Center, Helsinki University Hospital, Helsinki, Finland
- Department of Clinical Neurosciences, University of Helsinki, Helsinki, Finland
| | | | - Maija Koivu
- Department of Neurology, Brain Center, Helsinki University Hospital, Helsinki, Finland
- Department of Clinical Neurosciences, University of Helsinki, Helsinki, Finland
| | - Lytske Jantien Bakker
- Erasmus School of Health Policy and Management, Erasmus University Rotterdam, Burgemeester Oudlaan 50, 3062 PA, Rotterdam, Netherlands
| | - Carin Uyl-de Groot
- Erasmus School of Health Policy and Management, Erasmus University Rotterdam, Burgemeester Oudlaan 50, 3062 PA, Rotterdam, Netherlands
| | - William Ken Redekop
- Erasmus School of Health Policy and Management, Erasmus University Rotterdam, Burgemeester Oudlaan 50, 3062 PA, Rotterdam, Netherlands
| | - Welmoed Kirsten van Deen
- Erasmus School of Health Policy and Management, Erasmus University Rotterdam, Burgemeester Oudlaan 50, 3062 PA, Rotterdam, Netherlands
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Auffret M, Weiss D, Stocchi F, Vérin M, Jost WH. Access to device-aided therapies in advanced Parkinson's disease: navigating clinician biases, patient preference, and prognostic uncertainty. J Neural Transm (Vienna) 2023; 130:1411-1432. [PMID: 37436446 PMCID: PMC10645670 DOI: 10.1007/s00702-023-02668-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 06/24/2023] [Indexed: 07/13/2023]
Abstract
Device-aided therapies (DAT), which include deep brain stimulation and pump-based continuous dopaminergic stimulation with either levodopa or apomorphine, are among the major advances in the clinical management of Parkinson's disease (PD). Although DAT are being increasingly offered earlier in the disease course, their classical indication remains advanced PD. Theoretically, every patient should be offered transition to DAT when faced with refractory motor and nonmotor fluctuations and functional decline. Worldwide clinical reality is far from these ideal, and, therefore, question the "real-world" equal opportunity of access to DAT for PD patients with advanced PD-even within a single health care system. Differences in access to care, referral pattern (timing and frequency), as well as physician biases (unconscious/implicit or conscious/explicit bias), and patients' preferences or health-seeking behaviour are to be considered. Compared to DBS, little information is available concerning infusion therapies, as well as neurologists' and patients' attitudes towards them. This viewpoint aims to be thought-provoking and to assist clinicians in moving through the process of DAT selection, by including in their decision algorithm their own biases, patient perspective, ethical concerns as well as the current unknowns surrounding PD prognosis and DAT-related long-term side effects for a given patient.
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Affiliation(s)
- Manon Auffret
- France Développement Electronique (FDE), Monswiller, France.
- Institut des Neurosciences Cliniques de Rennes (INCR), Rennes, France.
- Behavior and Basal Ganglia Research Unit, CIC-IT, CIC1414, Pontchaillou University Hospital and University of Rennes, Rennes, France.
| | - Daniel Weiss
- Centre for Neurology, Department for Neurodegenerative Diseases, Hertie-Institute for Clinical Brain Research, Hoppe-Seyler-Str. 3, 72076, Tübingen, Germany
| | - Fabrizio Stocchi
- University San Raffaele Roma and Institute of Research and Medical Care IRCCS San Raffaele Roma, Rome, Italy
| | - Marc Vérin
- Institut des Neurosciences Cliniques de Rennes (INCR), Rennes, France
- Behavior and Basal Ganglia Research Unit, CIC-IT, CIC1414, Pontchaillou University Hospital and University of Rennes, Rennes, France
- Neurology Department, Pontchaillou University Hospital, rue Henri Le Guilloux, 35000, Rennes, France
| | - Wolfgang H Jost
- Parkinson-Klinik Ortenau, Kreuzbergstr. 12-16, 77709, Wolfach, Germany
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Raj S, Sarvankar R, Filipe L, Benedetto V, Mason N, Dawber J, Hill J, Clegg A. Cost-effectiveness of Levodopa-Carbidopa Intestinal Gel in treating people with Advanced Parkinson's disease. BRITISH JOURNAL OF NEUROSCIENCE NURSING 2023; 19:140-144. [PMID: 38813118 PMCID: PMC7616015 DOI: 10.12968/bjnn.2023.19.4.140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2024]
Abstract
Advanced Parkinson's disease affects patients with existing Parkinson's disease by further deteriorating their physical and cognitive functions. In this commentary we critically assess an economic evaluation which compared the cost-effectiveness of levodopa/carbidopa intestinal gel against standard of care in treating patients with Advanced Parkinson's disease. While the economic evaluation indicated that levodopa/carbidopa intestinal gel could be cost-effective within the UK parameters, we highlight important limitations related to its design, modelling and analysis. Future research should consider the incorporation of a separate arm dedicated to the re-infusion of apomorphine on eligible Advanced Parkinson's disease patients, a wider set of levodopa/carbidopa intestinal gel adverse events and related costs, and a sub-group analysis on different socio-economic strata.
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Affiliation(s)
- Sonia Raj
- Lancashire Teaching Hospitals NHS Foundation Trust
| | | | - Luís Filipe
- Faculty of Health and Medicine, Lancaster University
- NIHR Applied Research Collaboration North West Coast (ARC NWC), Methodological Innovation, Development, Adaptation and Support (MIDAS) Theme
| | - Valerio Benedetto
- NIHR Applied Research Collaboration North West Coast (ARC NWC), Methodological Innovation, Development, Adaptation and Support (MIDAS) Theme
- Applied Health Research hub, University of Central Lancashire
| | - Nicola Mason
- Lancashire Teaching Hospitals NHS Foundation Trust
| | | | - James Hill
- NIHR Applied Research Collaboration North West Coast (ARC NWC), Methodological Innovation, Development, Adaptation and Support (MIDAS) Theme
- Applied Health Research hub, University of Central Lancashire
| | - Andrew Clegg
- NIHR Applied Research Collaboration North West Coast (ARC NWC), Methodological Innovation, Development, Adaptation and Support (MIDAS) Theme
- Applied Health Research hub, University of Central Lancashire
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Analisi di impatto di budget di un nuovo sistema di cura in pazienti affetti da malattia di Parkinson. GLOBAL & REGIONAL HEALTH TECHNOLOGY ASSESSMENT 2022; 9:91-98. [PMID: 36628304 PMCID: PMC9768609 DOI: 10.33393/grhta.2022.2413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 07/28/2022] [Indexed: 01/13/2023] Open
Abstract
Objective: To estimate the economic impact of the introduction of a new care system based on apomorphine and Patient Support Program for motor fluctuations (“on-off” phenomena) in patients with Parkinson’s disease which are not sufficiently controlled by oral anti-Parkinson medication in Italy. Method: A Budget Impact model was developed to evaluate the new care system in patients with Parkinson’s disease over a 3-years’ time horizon. The comparator treatments included in the analysis were treatments based on apomorphine and levodopa + carbidopa. The analysis was conducted from a National Health Service (NHS) perspective. Costs included in the analysis were acquisition costs and device costs. A deterministic sensitivity analysis was carried out to evaluate the uncertainty of the parameters used. A break-even analysis was conducted to identify the minimum number of subjects that would need to be treated with the new care system to obtain a positive Budget Impact (World With – World Without = 0). Results: The analysis shows that the introduction of the new care system based on apomorphine could generate a cost saving incurred by the NHS of over € 5.7 million in 3 years. Break-even analysis shows that if it were possible to intercept with the new treatment at least 9 patients treated with apomorphine, there would not be an increase in costs for the NHS. Conclusion: The new care system would respond to the unmet needs of patients with Parkinson’s disease by generating a reduction in the expenditure incurred by NHS.
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Fasano A, Fung VSC, Seppi K, Pirtosek Z, Takáts A, Alobaidi A, Onuk K, Bergmann L, Parra J, Elibol B. Intercountry comparisons of advanced Parkinson's disease symptoms and management: Analysis from the OBSERVE-PD observational study. Acta Neurol Scand 2022; 146:167-176. [PMID: 35607843 PMCID: PMC9541702 DOI: 10.1111/ane.13648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 04/28/2022] [Accepted: 05/03/2022] [Indexed: 11/29/2022]
Abstract
Objectives In the absence of widely accepted criteria, determining when a patient with Parkinson's disease (PD) may benefit from more advanced treatments such as device‐aided therapy (DAT) so far remains a matter of physician judgment. This analysis investigates how classification of PD varies across countries relative to measures of disease severity. Materials and Methods The OBSERVational, cross‐sEctional PD (OBSERVE‐PD) study included consecutive patients with PD at centers that offer DATs in 18 countries. In this subgroup analysis, we explore intercountry differences in identification of advanced versus non‐advanced PD based on physician's clinical judgment, symptoms assessed using Delphi consensus criteria, use of DAT, motor and non‐motor symptoms, and caregiver support. Demographic and clinical characteristics were obtained through review of medical records. Results Overall, 1342 of 2615 patients (51.3%) were assessed by physicians as having advanced PD. The proportion of patients in different countries identified as having advanced PD (24.4–82.2%) varied. In 15 of 18 countries, a greater proportion of patients with advanced PD, according to select Delphi criteria, were identified by physicians as having advanced PD than with non‐advanced PD. There was a wide variability across countries in the proportion of patients with no dyskinesia, disabling dyskinesia, dyskinesia pain, and non‐motor symptoms who were identified by physicians as having advanced versus non‐advanced PD. Conclusions The proportion of patients identified with advanced PD symptoms varies widely across countries, despite differences on the patients' profiles, indicating a need for objective diagnostic criteria to help identify patients who may benefit from DAT.
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Affiliation(s)
- Alfonso Fasano
- Edmond J Safra Program in Parkinson's Disease, Morton and Gloria Shulman Movement Disorders Clinic Toronto Western Hospital, UHN Toronto ON Canada
- Division of Neurology University of Toronto Toronto ON Canada
- Krembil Research Institute Toronto ON Canada
| | - Victor S. C. Fung
- Movement Disorders Unit Westmead Hospital Westmead NSW Australia
- Sydney Medical School University of Sydney Sydney NSW Australia
| | - Klaus Seppi
- Medical University Innsbruck Innsbruck Austria
| | | | | | | | | | | | | | - Bulent Elibol
- Department of Neurology Hacettepe University Hospitals Ankara Turkey
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