Further Validation of a Portuguese Version of the Brief Pain Inventory Interference Scale

Alexandra Ferreira-Valente, José Luís Pais-Ribeiro, Mark P. Jensen

Research output: Contribution to journalArticlepeer-review

Abstract

Chronic pain is a significant health problem which interferes with patients daily functioning and quality of life. Valid and reliable measures of pain-related interference are needed to provide adequate care to patients and monitor changes in pain and functioning over time. This study sought to evaluate the reliability and validity of a Portuguese version of the Brief Pain Inventory (P-BPI) interference scale. Two hundred and fourteen patients with chronic musculoskeletal pain completed the P-BPI, 0-10 NRS of pain intensity, Short Form-12 Health Status Questionnaire (SF-12), Hospital Anxiety and Depression Scale (HADS). The P-BPI demonstrated excellent internal consistency (Cronbach´s alpha = .91) and showed moderate associations with the criterion measures (all rs .30 or larger), supporting its construct validity. Confirmatory factor analysis of the P-BPI items yielded a single factor, further supporting its construct validity. The results provide strong support for the reliability and validity of the P-BPI interference scale.
Original languageEnglish
Pages (from-to)89-96
Number of pages7
JournalClínica Y Salud
Volume23
Issue number1
Publication statusPublished - 2012

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