title: Validation of a Spanish version of the Revised Fibromyalgia Impact Questionnaire (FIQR).
abstract: BACKGROUND
  The Revised version of the Fibromyalgia Impact Questionnaire (FIQR) was published in 2009. The aim of this study was to prepare a Spanish version, and to assess its psychometric properties in a sample of patients with fibromyalgia.
  
  
  METHODS
  The FIQR was translated into Spanish and administered, along with the FIQ, the Hospital Anxiety Depression Scale (HADS), the 36-Item Short-Form Health Survey (SF-36), and the Brief Pain Inventory (BPI), to 113 Spanish fibromyalgia patients. The administration of the Spanish FIQR was repeated a week later.
  
  
  RESULTS
  The Spanish FIQR had high internal consistency (Cronbach’s α was 0.91 and 0.95 at visits 1 and 2 respectively). The test-retest reliability was good for the FIQR total score and its function and symptoms domains (intraclass correlation coefficient (ICC > 0.70), but modest for the overall impact domain (ICC = 0.51). Statistically significant correlations (p < 0.05) were also found between the FIQR and the FIQ scores, as well as between the FIQR scores and the remaining scales’ scores.
  
  
  CONCLUSIONS
  The Spanish version of the FIQR has a good internal consistency and our findings support its validity for assessing fibromyalgia patients. It might be a valid instrument to apply in clinical and investigational grounds.
authors.affiliation: Institute of Neurosciences, University of Granada, Granada, Spain. calandre@gmail.com.
authors.forename: Monika
authors.initials: M
authors.lastname: Salgueiro
authors.forename: Juan Miguel
authors.initials: JM
authors.lastname: García-Leiva
authors.forename: Javier
authors.initials: J
authors.lastname: Ballesteros
authors.forename: Javier
authors.initials: J
authors.lastname: Hidalgo
authors.forename: Rocío
authors.initials: R
authors.lastname: Molina
authors.forename: Elena P
authors.initials: EP
authors.lastname: Calandre
mesh_terms: D000328:Adult; D005260:Female; D005356:Fibromyalgia / Q000150:complications / Q000175:diagnosis*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010147:Pain Measurement; D011788:Quality of Life; D015203:Reproducibility of Results; D018434:Sickness Impact Profile; D011795:Surveys and Questionnaires / Q000592:standards*
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