Adam C. Cotton, Laura Scorr, William McDonald, Cynthia Comella, Joel S. Perlmutter, Christopher G. Goetz, Joseph Jankovic, Laura Marsh, Stewart Factor, H.A. Jinnah

Assessing the Severity of Cervical Dystonia: Ask the Doctor or Ask the Patient?

  • Neurology (clinical)
  • Neurology
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ABSTRACTBackgroundAssessing disease severity can be performed using either clinician‐rated scales (CRS) or patient‐rated outcome (PRO) tools. These two measures frequently demonstrate poor correlations.ObjectivesTo determine if the correlation between a CRS and PRO for motor features of cervical dystonia (CD) improves by accounting for non‐motor features.MethodsSubjects 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).ResultsLinear 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.ConclusionsThese 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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