title: Results from the translation and adaptation of the Iranian Short-Form McGill Pain Questionnaire (I-SF-MPQ): preliminary evidence of its reliability, construct validity and sensitivity in an Iranian pain population.
abstract: BACKGROUND
  The Short Form McGill Pain Questionnaire (SF-MPQ) is one of the most widely used instruments to assess pain. The aim of this study was to translate and culturally adapt the questionnaire for Farsi (the official language of Iran) speakers in order to test its reliability and sensitivity.
  
  
  METHODS
  We followed Guillemin's guidelines for cross-cultural adaption of health-related measures, which include forward-backward translations, expert committee meetings, and face validity testing in a pilot group. Subsequently, the questionnaire was administered to a sample of 100 diverse chronic pain patients attending a tertiary pain and rehabilitation clinic. In order to evaluate test-retest reliability, patients completed the questionnaire in the morning and early evening of their first visit. Finally, patients were asked to complete the questionnaire for the third time after completing a standardized treatment protocol three weeks later. Intraclass correlation coefficient (ICC) was used to evaluate reliability. We used principle component analysis to assess construct validity.
  
  
  RESULTS
  Ninety-two subjects completed the questionnaire both in the morning and in the evening of the first visit (test-retest reliability), and after three weeks (sensitivity to change). Eight patients who did not finish treatment protocol were excluded from the study. Internal consistency was found by Cronbach's alpha to be 0.951, 0.832 and 0.840 for sensory, affective and total scores respectively. ICC resulted in 0.906 for sensory, 0.712 for affective and 0.912 for total pain score. Item to subscale score correlations supported the convergent validity of each item to its hypothesized subscale. Correlations were observed to range from r2 = 0.202 to r2 = 0.739. Sensitivity or responsiveness was evaluated by pair t-test, which exhibited a significant difference between pre- and post-treatment scores (p < 0.001).
  
  
  CONCLUSIONS
  The results of this study indicate that the Iranian version of the SF-MPQ is a reliable questionnaire and responsive to changes in the subscale and total pain scores in Persian chronic pain patients over time.
authors.affiliation: Multidisciplinary Pain Clinic, Kasra Hospital, Tehran, 1514945311, Iran. farhadadelmanesh@yahoo.com.
authors.forename: Farhad
authors.initials: F
authors.lastname: Adelmanesh
authors.forename: Ali
authors.initials: A
authors.lastname: Arvantaj
authors.forename: Hassan
authors.initials: H
authors.lastname: Rashki
authors.forename: Seyedmehdi
authors.initials: S
authors.lastname: Ketabchi
authors.forename: Ali
authors.initials: A
authors.lastname: Montazeri
authors.forename: Gholamreza
authors.initials: G
authors.lastname: Raissi
references.citation: Pain. 1975 Sep;1(3):277-299
references.pmid: 1235985
references.citation: Clin Rheumatol. 2007 Jul;26(7):1083-7
references.pmid: 17106618
references.citation: J Clin Epidemiol. 1993 Dec;46(12):1417-32
references.pmid: 8263569
references.citation: Clin J Pain. 2010 Feb;26(2):153-62
references.pmid: 20090443
references.citation: Pain. 1988 Feb;32(2):251-255
references.pmid: 3362561
references.citation: Arch Neurol. 1993 Oct;50(10):1046-53
references.pmid: 8215962
references.citation: Spine (Phila Pa 1976). 2006 Jul 15;31(16):1841-5
references.pmid: 16845361
references.citation: BMJ. 2002 Jul 27;325(7357):185
references.pmid: 12142304
references.citation: Eur J Pain. 2000;4(3):275-81
references.pmid: 10985871
references.citation: J Adv Nurs. 2003 Dec;44(5):517-24
references.pmid: 14651700
references.citation: Eur J Pain. 2008 Oct;12(7):917-25
references.pmid: 18289893
references.citation: J Neural Transm (Vienna). 2002 Oct;109(10):1309-34
references.pmid: 12373563
references.citation: Pain. 1987 Sep;30(3):395-408
references.pmid: 3670884
references.citation: Scand J Rheumatol. 1994;23(2):77-81
references.pmid: 8165442
references.citation: J Pain Symptom Manage. 1993 May;8(4):191-5
references.pmid: 7963759
references.citation: Eur J Pain. 2001;5(2):109-18
references.pmid: 11465976
references.citation: Spine (Phila Pa 1976). 2000 Dec 15;25(24):3186-91
references.pmid: 11124735
references.citation: Clin J Pain. 2003 Sep-Oct;19(5):323-8
references.pmid: 12966259
references.citation: Pain. 1987 Aug;30(2):191-197
references.pmid: 3670870
references.citation: J Clin Oncol. 1999 Jan;17(1):143-9
references.pmid: 10458227
references.citation: Pain. 1987 May;29(2):195-207
references.pmid: 2886967
references.citation: Clin J Pain. 2005 Jan-Feb;21(1):73-82
references.pmid: 15599134
references.citation: Pain. 2004 Jul;110(1-2):189-96
references.pmid: 15275767
references.citation: Pain. 1988 Feb;32(2):133-139
references.pmid: 3283659
references.citation: Pain. 2000 Apr;85(3):457-463
references.pmid: 10781919
references.citation: Pain. 1992 Jul;50(1):59-65
references.pmid: 1513604
references.citation: Headache. 1991 Jul;31(7):463-4
references.pmid: 1774162
references.citation: Cas Lek Cesk. 1990 Dec 21;129(51):1611-4
references.pmid: 2150184