Standardization and Evaluation of Psychometric Properties of the Self-perceived Burden Questionnaire in Patients With Chronic Pain

Self-perception burden is one of the most important aspects of chronic pain. The present study aims to determine the psychometric properties of the self-perception burden scale in a sample of Iranian patients with chronic pain.

In this study, 324 male and female patients with chronic pain in Tehran City, Iran, were selected by the available sampling method. To evaluate convergent validity, the DASS-21 questionnaire and chronic pain catastrophe questionnaire were used. To evaluate divergent validity, the chronic pain self-efficacy questionnaire and life satisfaction questionnaire were used. Also, to determine the reliability, the internal consistency method by the Cronbach α method and the test-retest reliability at 4 weeks interval was used. To determine the structural validity, confirmatory factor analysis was used using LISREL software version 8.8.

The Cronbach α coefficients were 87% for the total scale and 85% for test-retest reliability. DASS-21 and chronic pain catastrophe scales showed a positive and significant relationship with the SPB questionnaire. Also, chronic pain self-efficacy and life satisfaction scales had a significant and negative relationship with the SPB questionnaire. In addition, the results of confirmatory factor analysis showed that
the single-factor structure has a good fit.

The Iranian version of the self-perception burden scale reflects desirable validity and reliability
and can diagnose and screen patients with chronic pain.