{"doi":"10.1002/mds.22340","title":"Movement Disorder Society‐sponsored revision of the Unified Parkinson's Disease Rating Scale (MDS‐UPDRS): Scale presentation and clinimetric testing results","abstract":"We present a clinimetric assessment of the Movement Disorder Society (MDS)-sponsored revision of the Unified Parkinson's Disease Rating Scale (MDS-UPDRS). The MDS-UDPRS Task Force revised and expanded the UPDRS using recommendations from a published critique. The MDS-UPDRS has four parts, namely, I: Non-motor Experiences of Daily Living; II: Motor Experiences of Daily Living; III: Motor Examination; IV: Motor Complications. Twenty questions are completed by the patient/caregiver. Item-specific instructions and an appendix of complementary additional scales are provided. Movement disorder specialists and study coordinators administered the UPDRS (55 items) and MDS-UPDRS (65 items) to 877 English speaking (78% non-Latino Caucasian) patients with Parkinson's disease from 39 sites. We compared the two scales using correlative techniques and factor analysis. The MDS-UPDRS showed high internal consistency (Cronbach's alpha = 0.79-0.93 across parts) and correlated with the original UPDRS (rho = 0.96). MDS-UPDRS across-part correlations ranged from 0.22 to 0.66. Reliable factor structures for each part were obtained (comparative fit index > 0.90 for each part), which support the use of sum scores for each part in preference to a total score of all parts. The combined clinimetric results of this study support the validity of the MDS-UPDRS for rating PD.","journal":"Movement Disorders","year":2008,"id":11536,"datarank":19.706603329862272,"base_score":8.905851181208021,"endowment":8.905851181208021,"self_citation_contribution":1.3358776771812033,"citation_network_contribution":18.37072565268107,"self_endowment_contribution":1.3358776771812033,"citer_contribution":18.37072565268107,"corpus_percentile":92.9,"corpus_rank":1612,"citation_count":7374,"citer_count":164,"citers_with_citation_signal":164,"citers_with_endowment":164,"datacite_reuse_total":0,"is_dataset":false,"is_oa":true,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":"2008-11-15","authors":[{"id":92179,"name":"Barbara C. Tilley","orcid":"0000-0002-3952-2282","position":1,"is_corresponding":false},{"id":92180,"name":"Stephanie R. Shaftman","orcid":null,"position":2,"is_corresponding":false},{"id":92181,"name":"Glenn T. 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