Ethics code: IR.KMUS.REC.1400.836.
Mafi S, Ghahremani F, Rahmani M, Alaee A. Validity and Reliability of the Persian Version of the Graded Chronic Pain Scale 2.0 for Determination of TMJ Pain. J Res Dent Maxillofac Sci 2024; 9 (2) :117-123
URL:
http://jrdms.dentaliau.ac.ir/article-1-543-fa.html
چکیده: (1085 مشاهده)
Background and Aim: The Graded Chronic Pain Scale version 2.0 (GCPS 2.0) has no Persian version for use on the Iranian population. Thus, this study aimed to validate the Persian version of this scale.
Materials and Methods: The cross-sectional study was conducted on 160 patients with chronic pain who filled out the GCPS 2.0. The 8-item self-report GCPS 2.0 was first translated to Persian. The validity of its Persian version was examined by a group of 7 expert specialists and calculation of the content validity index. The test-retest method was used to measure the reliability of the Persian version of GCPS 2.0. The Bartlett's test, KMO index, and exploratory factor analysis were used to confirm its construct validity. The internal consistency of the questions was analyzed by calculation of Cronbach's alpha coefficient and item-scale correlation coefficient, and retesting. The relationship between the questionnaire score and demographic information of the participants was analyzed (alpha=0.05).
Results: The content validity coefficient was 0.98. The test-retest coefficient was 0.98, indicating high reliability of the questionnaire. The mean age of the participants was 38 years, and 81 (50.6%) were males. Education was found to have a significant correlation with the total questionnaire score (P<0.05) but age had no such correlation (P>0.05).
Conclusion: The Persian version of the GCPS 2.0 with the omission of questions 1 and 5 may be used for assessment of chronic pain in the temporomandibular joint (TMJ) area in the Iranian population.