The purpose of the study is to document long-term response in real-life practice after injection cycles with BoNT-A in subjects suffering from idiopathic cervical dystonia (Long-term clinical and pharmaco-economic data).
Study Type
OBSERVATIONAL
Enrollment
1,050
Investigators were free to prescribe any BoNT A preparation, including Dysport, Botox and Xeomin.
Change in subject's satisfaction using a 5-point Likert scale.
Identification of prognostic factors for subject's satisfaction regarding control of symptoms associated with idiopathic CD.
Time frame: Baseline and at every 3 to 4 months, up to 3 years.
Change from baseline in Toronto Western Spasmodic Torticollis Rating Scale (TWSTRS) total score and severity sub-scale.
Assessment of severity of CD.
Time frame: Baseline and at every 3 to 4 months, up to 3 years.
Change in tremor associated with CD using Tsui score
Time frame: Baseline and at every 3 to 4 months, up to 3 years.
Change in pain relief assessed using the TWSTRS pain sub-scale.
Time frame: Baseline and at every 3 to 4 months, up to 3 years.
Change in disability will be measured with the TWSTRS disability sub-scale.
Time frame: Baseline and at every 3 to 4 months, up to 3 years.
Pharmaco-economic endpoints
* Time intervals between injections * Changes in concomitant treatments for CD and associated symptoms. * Changes in employment status
Time frame: Baseline and at every 3 to 4 months, up to 3 years.
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