Cotton AC, Scorr L, McDonald W, Comella C, Perlmutter JS, Goetz CG, Jankovic J, Marsh L, Factor S, Jinnah H. Assessing the Severity of Cervical Dystonia: Ask the Doctor or Ask the Patient?
Mov Disord Clin Pract 2023;
10:1399-1403. [PMID:
37772296 PMCID:
PMC10525044 DOI:
10.1002/mdc3.13827]
[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: 02/10/2023] [Revised: 05/04/2023] [Accepted: 06/11/2023] [Indexed: 09/30/2023] Open
Abstract
Background
Assessing disease severity can be performed using either clinician-rated scales (CRS) or patient-rated outcome (PRO) tools. These two measures frequently demonstrate poor correlations.
Objectives
To determine if the correlation between a CRS and PRO for motor features of cervical dystonia (CD) improves by accounting for non-motor features.
Methods
Subjects with CD (N = 209) were evaluated using a CRS (Toronto Western Spasmodic Torticollis Rating Scale, TWSTRS) and a PRO (Cervical Dystonia Impact Profile, CDIP-58).
Results
Linear regression revealed a weak correlation between the two measures, even when considering only the motor subscales of each. The strength of this relationship improved with a regression model that included non-motor symptoms of pain, depression, and disability.
Conclusions
These results argue that the results of motor assessments in a PRO for CD cannot be fully appreciated without simultaneous assessment of non-motor co-morbidities. This conclusion might apply to other disorders, especially those with frequent non-motor co-morbidities.
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