Article

Acceptance and Commitment Therapy for chronic pain has good empirical
support. Pain acceptance is most often assessed with the Chronic Pain Acceptance
Questionnaire (CPAQ). Recently a shorter 8-item version, the CPAQ-8, was
developed. OBJECTIVES: To further validate the CPAQ-8 in a Swedish context and to
test its sensitivity to treatment effects, an as-yet unknown property of the
instrument. METHODS: A total of 891 patients completed the CPAQ, along with
scales for anxiety and depression (Hospital Anxiety and Depression scale),
kinesiophobia (Tampa Scale for Kinesiophobia) and quality of life (Short
Form-36). Confirmatory factor analyses were performed to examine the factor
structure. Convergent validity was tested with Pearson's correlations. Changes
over time were evaluated with paired t-test. RESULTS: The confirmatory factor
analyses showed that the CPAQ 2-factor model had a better fit compared with the
1-factor model, both for the 8- and 20-item versions. All CPAQ-8 scales
demonstrated good internal consistency (alpha >/= 0.80). They also correlated
significantly with related constructs, supporting convergent validity. The CPAQ-8
explained a large share of the total variance in CPAQ-20 and was also able to
track rehabilitation changes (large effect size, d = 0.89). CONCLUSION: CPAQ-8
demonstrated good psychometric properties and sensitivity to rehabilitation
changes. Further research that considers other cultural contexts may lead enhance
the applications of this instrument.

Langue : ANGLAIS