Structural validity of the Chronic Pain Coping Inventory-Brazilian version.

• Main Authors: Layz Alves Ferreira Souza, Lilian Varanda Pereira, Louise Amália de Moura, Leidy-Johanna Rueda Díaz, Diná de Almeida Lopes Monteiro da Cruz, José Aparecido Da Silva
• Format: Article
• Language: English
• Published: Public Library of Science (PLoS) 2021-01-01
• Series: PLoS ONE
• Online Access: https://doi.org/10.1371/journal.pone.0246294

<h4>Background</h4>The Chronic Pain Coping Inventory (CPCI) has been widely used to measure coping with pain, however, the psychometric properties of the Brazilian CPCI are unknown.<h4>Aim</h4>To verify the validity and reliability of the CPCI-Brazilian version.<h4>Materials and methods</h4>A sample of 705 outpatients with chronic pain participated in the study. Cronbach's alpha, corrected item-total correlations, and confirmatory factor analysis were performed, using the method of Diagonally Weighted Least Squares.<h4>Results</h4>Construct validity was supported with a factor loading range of 0.36-0.90 (9 factors) corroborating original loads. The final model had adequate fit with items 42 and 54 excluded, D.F = 2174, TLI = 0.96; CFI = 0.96 and RMSEA = 0.051(p = 0.067). Eight of the nine CPCI scales showed satisfactory reliability (Cronbach's alpha ranged from 0.70 to 0.92). The Relaxation scale obtained a low alpha value (0.53).<h4>Conclusion</h4>The CPCI-Brazilian version, after exclusion of items 42 and 54, is valid to measure chronic pain coping in Brazilian adults.