title: Reliability, validity, and sensitivity measures of expanded and revised version of the short-form McGill Pain Questionnaire (SF-MPQ-2) in Iranian patients with neuropathic and non-neuropathic pain.
abstract: OBJECTIVE
  The aim of this study was to assess validity, reliability, and sensitivity of the Persian version of the short-form McGill Pain Questionnaire 2 (SF-MPQ-2) in patients with neuropathic and non-neuropathic pain.
  
  
  METHODS
  Beaton's guideline was used to translate and adapt the SF-MPQ-2 to Persian.
  
  
  METHODS
  One hundred eighty-four patients with subacute and chronic non-neuropathic pain and 74 patients with painful diabetic peripheral neuropathy (total 258) attending multidisciplinary pain clinic participated in the study.
  
  
  METHODS
  Internal consistency and intraclass correlation coefficient (ICC) were estimated for participants who had completed the questionnaire in the morning and evening of the first day. The visual analog scale (VAS) and the present pain intensity (PPI) were also recorded to test convergent validity of the questionnaire. Sensitivity to change was examined after a standard treatment and validated by means of the patient global impression of change (PGIC) in addition to VAS and PPI. Exploratory factor analysis (EFA) was used to find possible components.
  
  
  RESULTS
  Cronbach's alpha was 0.906, which showed high internal consistency. ICC (0.941) revealed test-retest reliability. There was high correlation between the mean VAS and the mean total score (r = 0.926). Patients in different levels of PPI and PGIC exhibited significant differences among their mean total scores (P < 0.05). EFA revealed four components similar to the original SF-MPQ-2.
  
  
  CONCLUSIONS
  The Persian translation of the expanded and revised version of the SF-MPQ-2 is a highly reliable, sensitive, and valid instrument to evaluate pain in patients with and without neuropathic etiology.
authors.affiliation: Multidisciplinary Pain Clinic, Kasra Hospital, Tehran, Iran. farhadadelmanesh@yahoo.com
authors.forename: Farhad
authors.initials: F
authors.lastname: Adelmanesh
authors.forename: Ali
authors.initials: A
authors.lastname: Jalali
authors.forename: Hamid
authors.initials: H
authors.lastname: Attarian
authors.forename: Behzad
authors.initials: B
authors.lastname: Farahani
authors.forename: Seyed Mehdi
authors.initials: SM
authors.lastname: Ketabchi
authors.forename: Ali
authors.initials: A
authors.lastname: Arvantaj
authors.forename: Gholam Reza
authors.initials: GR
authors.lastname: Raissi
mesh_terms: D000328:Adult; D059350:Chronic Pain / Q000175:diagnosis; D003929:Diabetic Neuropathies / Q000175:diagnosis*; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D007492:Iran; D007802:Language; D008297:Male; D008875:Middle Aged; D010146:Pain / Q000175:diagnosis*; D010147:Pain Measurement / Q000295:instrumentation / Q000706:statistics & numerical data*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D011795:Surveys and Questionnaires