title: Confirmatory factor analysis of the Korean version of the short-form McGill pain questionnaire with chronic pain patients: a comparison of alternative models.
abstract: BACKGROUND
  The Short Form of the McGill Pain Questionnaire (SF-MPQ) is the most widely used assessment of the quality and intensity of pain. In previous validation studies, the factor structure of the SF-MPQ varied widely from various two-factor structures to a five-factor structure, although research on the SF-MPQ quite consistently supports its two-factor structure (i.e., sensory and affective) across different countries and languages. In Korea, the results of exploratory factor analysis of a Korea version of SF-MPQ (KSF-MPQ) showed 2-factor structure consisting of 'sensory' and 'affective' excluding two items such as splitting and heavy. As an attempt to further validate the KSF-MPQ, the purpose of this study was to confirm whether the KSF-MPQ model is an appropriate model for chronic pain patients in Korea by comparing several alternative models of the SF-MPQ.
  
  
  RESULTS
  A total of 150 chronic pain patients seeking treatment in Seoul, Korea, participated and completed the KSF-MPQ. Confirmatory factor analysis was conducted to evaluate the adequacy of the KSF-MPQ model and several alternative models. The results indicated that the adjusted KSF-MPQ model showed the best fit to the data among the models in chronic pain patients in Korea.
  
  
  CONCLUSIONS
  The results showed the KSF-MPQ is cross-culturally equivalent to the original questionnaire. Thus, the KSF-MPQ is valid measurement for assessing the quality and intensity of pain to chronic pain patients and may be helpful in clinical and research settings in Korea.
authors.affiliation: Department of Psychology, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 156-756, Korea. cpsysuna@gmail.com.
authors.forename: Sun Ah
authors.initials: SA
authors.lastname: Choi
authors.affiliation: Department of Psychology, Chonbuk National University, Deokjin-dong 1ga, Deokjin-gu, Jeonju-si, Jeollabuk-do, 561-756, Korea. jrson@jbnu.ac.kr.
authors.forename: ChongNak
authors.initials: C
authors.lastname: Son
authors.affiliation: Department of Psychology, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 156-756, Korea. clipsy@cau.ac.kr.
authors.forename: Jang-Han
authors.initials: JH
authors.lastname: Lee
authors.affiliation: Department of Psychology, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon, 305-764, Korea. sungkunc@cnu.ac.kr.
authors.forename: Sungkun
authors.initials: S
authors.lastname: Cho
mesh_terms: D000328:Adult; D044466:Asian People / Q000523:psychology*; D059350:Chronic Pain / Q000523:psychology*; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008960:Models, Psychological; D017063:Outcome Assessment, Health Care; D010147:Pain Measurement / Q000295:instrumentation* / Q000379:methods; D011788:Quality of Life / Q000523:psychology*; D066106:Seoul; D011795:Surveys and Questionnaires