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Objectives: The primary aim was to assess the psychometric properties (including internal consistency, construct validity, reproducibility, and factor structure) of the Central Sensitization Inventory (CSI), adapted and validated for a Brazilian population (CSI-BP). Additionally, we evaluated the relationship between the CSI-BP and the serum brain-derived neurotrophic factor (BDNF) and determined if the symptoms elicited by the CSI-BP discriminate between subjects who do/do not respond to the conditioned pain modulation (CPM) task, as assessed by change in numeric pain scale (0–10) score. Patients and methods: A cross-sectional study was conducted in a pain clinic in a tertiary teaching hospital. A total of 222 adults with chronic musculoskeletal pain and 63 healthy control subjects completed the CSI-BP and the Brazilian Portuguese pain-catastrophizing scale (BPPCS). A team of experts translated the CSI according to the international guidelines. Test–retest, item analysis, convergent validity, and factor analysis were performed. Later, a random subsample (n=77) was used to correlate the CSI-BP adjusted index with change in numeric pain-scale score during the CPM task and a BDNF blood sample Results: The CSI-BP presented strong psychometric properties (test–retest reliability 0.91, Cronbach’s a=0.91). Confirmatory factor analysis yielded a four-factor structure, supporting the original English version. The CSI-BP adjusted index showed moderate positive correlation with the BP-PCS, and classified more than 80% of patients correctly vs healthy controls. Serum BDNF levels explained 27% of the variation in the CSI-BP adjusted index. Subjects with impairment in the descending modulatory system had higher CSI-BP adjusted index scores than subjects who responded normally to the CPM task: 49.35 (12.1) vs 39.5 (12.33), respectively (P<0.05). Conclusion: The CSI-BP was found to be a psychometrically strong and reliable instrument, with primary evidence of validity. Higher scores on the CSI-BP were correlated positively with serum BDNF and with greater dysfunction of the descending pain-modulatory system.

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Lume, repositório digital da Universidade Federal do Rio Grande do Sul (UFRGS)  

Autor(es)

Caumo, Wolnei -  Antunes, Luciana da Conceição -  Elkfury, Jéssica Lorenzzi -  Herbstrith, Evelyn Grabin -  Sipmann, Raquel Busanello -  Souza, Andressa de -  Torres, Iraci Lucena da Silva -  Santos, Vinícius Souza dos -  Neblett, Randy - 

Id.: 71022448

Idioma: eng  - 

Versión: 1.0

Estado: Final

Tipo:  application/pdf - 

Palabras claveConfirmatory factor analysis - 

Tipo de recurso: Artigo de periódico  -  Estrangeiro  - 

Tipo de Interactividad: Expositivo

Nivel de Interactividad: muy bajo

Audiencia: Estudiante  -  Profesor  -  Autor  - 

Estructura: Atomic

Coste: no

Copyright: sí

: Open Access

Formatos:  application/pdf - 

Requerimientos técnicos:  Browser: Any - 

Relación: [References] Journal of pain research. Auckland. Vol. 2017, no. 10 (1 Sept. 2017), p. 2109-2122

Fecha de contribución: 22-feb-2018

Contacto:

Localización:
* 1178-7090
* 001059387

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