title: A model to assess severity and impact of fibromyalgia.
abstract: OBJECTIVE
  To establish a model for the detection of specific factors associated with the severity of symptoms and the impact of fibromyalgia (FM).
  
  
  METHODS
  We evaluated 332 consecutive new patients with FM for factors that may be associated with disease severity, assessed by patient global assessment, and function, evaluated by the Fibromyalgia Impact Questionnaire (FIQ). Fifteen potential explanatory factors were evaluated in a multiple linear regression model on data taken from an extensive group of standardized instruments.
  
  
  RESULTS
  Of the 15 factors, pain levels, self-assessed inability to work, psychological distress, pending litigation, helplessness, level of education, and coping ability had a significant association with patients' global assessment and with scores on the total FIQ as well as on the activities of daily living subcomponent of the FIQ.
  
  
  CONCLUSIONS
  Disease related factors such as pain and psychological factors such as work status, helplessness, education, and coping ability had an independent and significant relationship to FM symptom severity and function.
authors.affiliation: Department of Medicine, Newton-Wellesley Hospital, Boston, MA, USA.
authors.forename: D L
authors.initials: DL
authors.lastname: Goldenberg
authors.forename: C J
authors.initials: CJ
authors.lastname: Mossey
authors.forename: C H
authors.initials: CH
authors.lastname: Schmid
mesh_terms: D000328:Adult; D000368:Aged; D003627:Data Interpretation, Statistical; D004185:Disability Evaluation; D004522:Educational Status; D005260:Female; D005356:Fibromyalgia / Q000175:diagnosis / Q000503:physiopathology* / Q000523:psychology; D006305:Health Status Indicators; D006801:Humans; D016014:Linear Models; D008297:Male; D008875:Middle Aged; D010146:Pain; D012044:Regression Analysis; D012307:Risk Factors; D012720:Severity of Illness Index; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires