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Discrepancies in the interpretation of clinical symptoms and signs in the diagnosis of multiple sclerosis. A proposal for standardization
Bernard MJ Uitdehaag
Department of Neurology, VU University Medical Centre, Amsterdam, The Netherlands, bmj.uitdehaag{at}vumc.nl
Ludwig Kappos
Department of Neurology, Kantonsspital Basel Universitätskliniken, Basel, Switzerland
Lars Bauer
Schering AG, Berlin, Germany
Mark S Freedman
Multiple Sclerosis Research Clinic, The Ottawa Hospital, Ontario, Canada
David Miller
NMR Research Unit, Institute of Neurology and National Hospital for Neurology & Neurosurgery, London, UK
Rupert Sandbrink
Schering AG, Berlin, Germany
Chris H Polman
Department of Neurology, VU University Medical Centre, Amsterdam, The Netherlands
The new McDonald diagnostic criteria for multiple sclerosis (MS) incorporate detailed criteria for the interpretation and classification of magnetic resonance imaging (MRI) findings, but, in contrast, provide no instructions for the interpretation of clinical findings. Because MS according to the McDonald criteria is one of the primary endpoints in a large trial enrolling patients after the first manifestation suggestive for a demyelinating disease (BENEFIT study), it was decided to organize a centralized eligibility assessment for this trial. During this eligibility assessment it was observed that there were marked inconsistencies in the decisions of participating neurologists with respect to the classification of clinical symptoms as being caused by one or more lesions provoking discussions in about one in every five patients. This paper describes these inconsistencies and their sources, and recommends a systematic approach that attempts to reduce the variability in interpreting clinical findings.
Key Words: diagnosis symptoms and signs
Multiple Sclerosis, Vol. 11, No. 2,
227-231 (2005)
DOI: 10.1191/1352458505ms1149oa

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