Reliability among neurologists in the severity assessment of blepharospasm and oromandibular dystonia: A multicenter study

G. Defazio, V. Lepore, G. Abbruzzese, E. Barontini, A. Berardelli, T. Caraceni, F. Carella, P. Girlanda, M. Manfredi, C. Messina, S. Maurri, E. Ferrari, P. Livrea

Research output: Contribution to journalArticle

Abstract

The reliability of a scale of 0 to 4 (where 0 is normal) in rating the severity of blepharospasm (BS) and oromandibular dystonia (OMD) was evaluated by the concordance among six neurologists from different neurological institutions. As expressed by k index, interobserver agreement was moderate either for BS or for OMD according to the Landis classification. Neurologists showed different rating attitude toward BS and OMD. In fact, the category analysis showed that raters were inclined to overestimate BS and to underestimate OMD. The familiarity with dystonia influenced reliability more than the length of professional experience in neurology. In fact, when examiners were subdivided into subgroups (each of three raters) according to the former criteria, the level of interobserver agreement increased significantly. Almost perfect agreement was obtained in intrarater comparisons. These results may be of value with regard to the conduct of multicenter epidemiologic and clinical studies on focal dystonias.

Original languageEnglish
Pages (from-to)616-621
Number of pages6
JournalMovement Disorders
Volume9
Issue number6
DOIs
Publication statusPublished - 1994

Keywords

  • Focal dystonia
  • k statistics
  • Rating scale
  • Reliability

ASJC Scopus subject areas

  • Clinical Neurology
  • Neuroscience(all)

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    Defazio, G., Lepore, V., Abbruzzese, G., Barontini, E., Berardelli, A., Caraceni, T., Carella, F., Girlanda, P., Manfredi, M., Messina, C., Maurri, S., Ferrari, E., & Livrea, P. (1994). Reliability among neurologists in the severity assessment of blepharospasm and oromandibular dystonia: A multicenter study. Movement Disorders, 9(6), 616-621. https://doi.org/10.1002/mds.870090606