CONCEPTS OF PAIN INVENTORY (COPI) AND PAIN PERCEPTION QUESTIONNAIRE FOR YOUNG PEOPLE (PPQ-YP):TRANSLATION INTO BRAZILIAN PORTUGUESE AND EVALUATION OF MEASUREMENT PROPERTIES IN CHILDREN LIVING WITH PAIN

• Grant number: 25/10270-2
• Support Opportunities: Scholarships in Brazil - Master
• Start date: October 01, 2025
• End date: February 28, 2027
• Field of knowledge: Health Sciences - Physiotherapy and Occupational Therapy
• Principal Investigator: Thaís Cristina Chaves
• Grantee: Bianca Emanuelli Saes Campanha
• Host Institution: Centro de Ciências Biológicas e da Saúde (CCBS). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil

Abstract

Chronic pain is defined as pain that recurs or persists for more than 3 months and is one of the phenomena that causes the most disability in individuals worldwide. Despite being a more discussed and studied condition in adult populations, children can also experience chronic pain, called pediatric chronic pain (PCP). PCP is related to school absenteeism, less participation in leisure activities and sports and lower quality of life. Studies indicate that psychosocial interventions, including education strategies, should be used in the management of PCP. However, there are few available instruments that can be used to identify the effectiveness of these interventions in adults, and they are even scarcer in the pediatric context. In the literature, the Concepts of Pain Inventory (COPI-Child) and the Pain Perception Questionnaire for Young People (PPQ-YP) have been proposed to measure beliefs and knowledge about pain, and beliefs, feelings, symptoms and pain triggers, respectively. However, such instruments are not available for Brazilian Portuguese. The objective of this study will be to carry out a cross-cultural adaptation into Brazilian Portuguese and verify the measurement properties of the COPI and the PPQ-YP in individuals with PCP. The study will include 200 children aged 8 to 17 years with chronic musculoskeletal pain of non-specific origin. The cross-cultural adaptation will take place in 5 stages: initial translation, translation synthesis, back-translation, expert committee meeting and testing of pre-final versions. Verification of measurement properties will involve checking reliability, internal consistency, error, construct validity and structural validity. Thirty participants will answer the questionnaire to evaluate the pre-final version and the entire sample (n=200) will be considered in the measurement properties verification stage. To analyze reliability, the Intraclass Correlation Coefficient (ICC) will be used. To analyze structural validity, confirmatory factor analysis (CFA) will be used. To analyze the standard error of measurement (SEM), the formula EPM = DP x ¿(1-CCI) will be used. The minimum detectable change will be calculated considering MDD= 1.96 x ¿2 x EPM. Spearman's correlation coefficient will be used to assess construct validity. This study will contribute to providing translated and adapted tools for the Brazilian population that evaluate pain-related concepts/beliefs in individuals with PCP. (AU)