2026-04-27T01:59:20Zhttps://repisalud.isciii.es/rest/oai/request

oai:repisalud.isciii.es:20.500.12105/80962025-06-19T14:59:30Zcom_20.500.12105_2052com_20.500.12105_2051col_20.500.12105_19608col_20.500.12105_19613

00925njm 22002777a 4500 dc Forjaz, Maria João author Ayala, Alba author Testa, Claudia M author Bain, Peter G author Elble, Rodger author Haubenberger, Dietrich author Rodriguez-Blazquez, Carmen author Deuschl, Günther author Martínez-Martín, Pablo author 2015-07 Background: This article proposes an International Parkinson and Movement Disorder Society (MDS)-UPDRS tremor-based scale and describes its measurement properties, with a view to developing an improved scale for assessing tremor in Parkinson's disease (PD). Methods: This was a cross-sectional, multicenter study of 435 PD patients. Rasch analysis was performed on the 11 MDS-UPDRS tremor items. Construct validity, precision, and test-retest reliability were also analyzed. Results: After some modifications, which included removal of an item owing to redundancy, the obtained MDS-UPDRS tremor scale showed moderate reliability, unidimensionality, absence of differential item functioning, satisfactory convergent validity with medication, and better precision than the raw sum score. However, the scale displayed a floor effect and a need for more items measuring lower levels of tremor. Conclusions: The MDS-UPDRS tremor scale provides linear scores that can be used to assess tremor in PD in a valid, reliable way. The scale might benefit from modifications and studies that analyze its responsiveness. Mov Disord. 2015 Jul;30(8):1139-43. 08853185 http://hdl.handle.net/20.500.12105/8096 26096210 10.1002/mds.26271 1531-8257 Movement disorders : official journal of the Movement Disorder Society MDS-UPDRS Parkinson's disease Rasch analysis Tremor Proposing a Parkinson's disease-specific tremor scale from the MDS-UPDRS