Table 1 Information collected to characterize the treating physician's practice site and experience in using botulinum toxin for CD

Physician specialty

○ Neurologist

○ Physical medicine and rehabilitation

○ General practitioner

○ Pain specialist

Type of practice

○ Private, academic, health maintenance organization, general neurology, movement disorders focused

○ Total number of patients seen per week

○ Number of CD patients per week

○ Total number of CD patients in practice

Experience in practice and with botulinum toxin for CD

○ Years of treating CD with botulinum toxin

○ Clinical research experience with botulinum toxin

○ Formal botulinum toxin injection training

○ Years in practice

○ Board certification