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Evidence‐based guidelines for using the Short Form 36 in cervical dystonia
Author(s) -
Cano Stefan J.,
Thompson Alan J.,
Bhatia Khailash,
Fitzpatrick Ray,
Warner Thomas T.,
Hobart Jeremy C.
Publication year - 2007
Publication title -
movement disorders
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.352
H-Index - 198
eISSN - 1531-8257
pISSN - 0885-3185
DOI - 10.1002/mds.21187
Subject(s) - cervical dystonia , dystonia , physical medicine and rehabilitation , medicine , psychology , neuroscience
We aimed to provide evidence‐based guidelines for using the Short Form 36 (SF‐36) as an outcome measure in cervical dystonia (CD). To do this, we tested the hypothesized relationships between items, scales, and summary measures of the SF‐36 using psychometric analyses in data from a postal survey of 235 people with CD. Although the majority of subscales performed adequately, the Role Physical and Role Emotional subscales had substantial floor and/or ceiling effects. Evidence did not support computing SF‐36 Physical and Mental Component Summary scores. We propose guidelines that include the recommendation that these subscale and summary scores should be reported with caution. © 2006 Movement Disorder Society