Validation of the Brazilian version of the child pain catastrophizing scale and its relationship with a marker of central sensitization

• Autor(a) principal: Schneider, Larissa
• Data de Publicação: 2022
• Outros Autores: Castro, Stela Maris de Jezus, Mallman, Eliza Saggin, Evaldt, Cibelle de Abreu, Souza, Andressa de, Rodrigues, Josy da Silva, Mendanha, Clarissa, Caumo, Wolnei, Stefani, Luciana Paula Cadore
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UFRGS
• Texto Completo: http://hdl.handle.net/10183/250322
• topic: Dor crônica; Estudo de validação; Criança; Biomarcadores; Catastrophizing; Pain catastrophizing; Chronic pain; Validation studies as topic; Children; Brain-Derived Neurotrophic Factor; BDNF

Objectives The Pain Catastrophizing Scale-Child version (PCS-C) allows to identify children who are prone to catastrophic thinking. We aimed to adapt the Brazilian version of PCS-C (BPCS-C) to examine scale psychometric properties and factorial structure in children with and without chronic pain. Also, we assessed its correlation with salivary levels of Brain-Derived Neurotrophic factor (BDNF). Methods The Brazilian version of PCS-C was modified to adjust it for 7–12 years old children. To assess psychometric properties, 100 children (44 with chronic pain from a tertiary hospital and 56 healthy children from a public school) answered the BPCS-C, the visual analogue pain scale, and questions about pain interference in daily activities. We also collected a salivary sample to measure BDNF. Results We observed good internal consistency (Cronbach’s value = 0.81). Parallel analysis retained 2 factors. Confirmatory factor analysis of our 2-factor model revealed consistent goodness-of-fit (IFI = 0.946) when compared to other models. There was no correlation between visual analogue pain scale and the total BPCS-C score; however, there was an association between pain catastrophizing and difficulty in doing physical activities in school (p = 0.01). BPCS-C total scores were not different between groups. We found a marginal association with BPCS-C (r = 0.27, p = 0.01) and salivary BDNF levels. Discussion BPCS-C is a valid instrument with consistent psychometric properties. The revised 2-dimension proposed can be used for this population. Children catastrophism is well correlated with physical limitation, but the absence of BPCS-C score differences between groups highlights the necessity of a better understanding about catastrophic thinking in children.