References
- Nutt JG, Muenter MD, Aronson A, et al. Epidemiology of focal and generalized dystonia in Rochester, Minnesota. Mov Disord Official J Mov Disord Soc 1988;3:188-94
- Steeves TD, Day L, Dykeman J, et al. The prevalence of primary dystonia: a systematic review and meta-analysis. Mov Disord Official J Mov Disord Soc 2012;27:1789-96
- Van Zandijcke M. Cervical dystonia (spasmodic torticollis). Some aspects of the natural history. ActaN Belg 1995;95:210-15
- Jost WH, Hefter H, Stenner A, et al. Rating scales for cervical dystonia: a critical evaluation of tools for outcome assessment of botulinum toxin therapy. J Neural Transm 2013;120:487-96
- Logroscino G, Livrea P, Anaclerio D, et al. Agreement among neurologists on the clinical diagnosis of dystonia at different body sites. J Neurol Neurosurg Psychiatry 2003;74:348-50
- Consky ES, Lang AE. Clinical assessments of patients with cervical dystonia. In: Jankovic J, Hallett M, eds. Therapy with botulinum toxin. New York, NY: Marcel Dekker, 1994. pp. 211-38
- Comella CL, Stebbins GT, Goetz CG, et al. Teaching tape for the motor section of the Toronto Western Spasmodic Torticollis Scale. Mov Disord Official J Mov Disord Soc 1997;12:570-5
- Novak I, Campbell L, Boyce M, et al. Botulinum toxin assessment, intervention and aftercare for cervical dystonia and other causes of hypertonia of the neck: international consensus statement. Eur J Neurol Off J Eur Feder Neurol Soc 2010;17(2 Suppl):94-108
- Truong D, Brodsky M, Lew M, et al. Long-term efficacy and safety of botulinum toxin type A (Dysport) in cervical dystonia. Parkinsonism Relat Disord 2010;16:316-23
- Truong D, Duane DD, Jankovic J, et al. Efficacy and safety of botulinum type A toxin (Dysport) in cervical dystonia: results of the first US randomized, double-blind, placebo-controlled study. Mov Disord Official J Mov Disord Soc 2005;20:783-91
- Misra VP, Ehler E, Zakine B, et al; group IIC. Factors influencing response to Botulinum toxin type A in patients with idiopathic cervical dystonia: results from an international observational study. BMJ Open 2012;2:e000881
- Poewe W, Deuschl G, Nebe A, et al. What is the optimal dose of botulinum toxin A in the treatment of cervical dystonia? Results of a double blind, placebo controlled, dose ranging study using Dysport. German Dystonia Study Group. J Neurol Neurosurg Psychiatry 1998;64:13-17
- National Institute for Health and Clinical Excellence (NICE). Guide to the methods of technology appraisal. London, UK: 2008. www.nice.org.uk/media/B52/A7/TAMethodsGuideUpdatedJune2008.pdf. Accessed May 23, 2013
- Franks P, Lubetkin EI, Gold MR, et al. Mapping the SF-12 to the EuroQol EQ-5D Index in a national US sample. Med Decis Making Int J Soc Med Decis Making 2004;24:247-54
- Rowen D, Brazier J, Roberts J. Mapping SF-36 onto the EQ-5D index: how reliable is the relationship? Health Qual Life Outcomes 2009;7:27
- Sullivan PW, Ghushchyan V. Mapping the EQ-5D index from the SF-12: US general population preferences in a nationally representative sample. Med Decis Making Int J Soc Med Decis Making 2006;26:401-9
- Powell JL. Least absolute deviations estimation for the censored regression model. J Econometr 1984;25:303-25
- Gray AM, Rivero-Arias O, Clarke PM. Estimating the association between SF-12 responses and EQ-5D utility values by response mapping. Med Decis Making Int J Soc Med Decis Making 2006;26:18-29
- Spiegelhalter DJ, Abrams KR, Myles JP. Bayesian approaches to clinical trials and health care evaluation. The Atrium, Southern Gate, Chicheter, West Sussex, England: John Wiley & Sons Ltd, 2004
- Rice N, Jones A. Multilevel models and health economics. Health Econ 1997;6:561-75
- DerSimonian R, Kacker R. Random-effects model for meta-analysis of clinical trials: an update. Contemp Clin Trials 2007;28:105-14
- Thompson SG, Higgins JP. How should meta-regression analyses be undertaken and interpreted? Stat Med 2002;21:1559-73
- Coelho M, Valadas AF, Mestre T, et al. Pain and quality of life in the treatment of cervical dystonia. Eur Neurol Rev 2009;4:74-8
- Molho ES, Agarwal N, Regan K, et al. Effect of cervical dystonia on employment: a retrospective analysis of the ability of treatment to restore premorbid employment status. Mov Disord Official J Mov Disord Soc 2009;24:1384-7