Measurement structure of the Pain Self-Efficacy Questionnaire in a sample of Chinese patients with chronic pain

Sinfia KS VONG, Gladys LY CHEING, Che Hin Chetwyn CHAN, Fong CHAN, Arran SL LEUNG

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Abstract

Objective: To examine the factorial structure of the Chinese translation of the Pain Self-Efficacy Questionnaire in a sample of Chinese patients with chronic pain.

Setting: Outpatient physiotherapy department in a local hospital and a local rehabilitation clinic.

Participants: One hundred and twenty patients with chronic pain in physiotherapy treatment.

Methods: Each participant was asked to complete the Chinese version of the Pain Self-Efficacy Questionnaire, visual analogue scale (VAS), modified Roland Morris Disability Questionnaire, and Short Form Health Survey (SF-36). The test structure of the Pain Self-Efficacy Questionnaire was evaluated by confirmatory factor analysis. Highly correlated paths were added onto the initial structure for improving the final construct for the Pain Self-Efficacy Questionnaire. The correlations between the Chinese Pain Self-Efficacy Questionnaire and related measurements were computed using Pearson product-moment correlation coefficients.

Results: Confirmatory factor analysis indicated that the one-factor model provided the best fit between the model and data, with the chi-square of the respecified model computed to be 36.79 (33, N = 120), the goodness-of-fit index 0.940, cumulative fit index 0.996, and the root mean square error of approximation 0.031. The item-total correlations ranged from 0.70 to 0.85. Cronbach's alpha of the Chinese version of the Pain Self-Efficacy Questionnaire was computed to be 0.94. The total scores also correlated significantly with the modified Roland Morris Disability Questionnaire and six subscales of SF-36.

Conclusion: A single-factor model confirmed the unidimensionality of the Chinese version of the Pain Self-Efficacy Questionnaire in a sample of Chinese patients with chronic pain. It demonstrated good internal consistency reliability and construct-related validity. Copyright © 2009 The Author(s).
Original languageEnglish
Pages (from-to)1034-1043
JournalClinical Rehabilitation
Volume23
Issue number11
Early online dateAug 2009
DOIs
Publication statusPublished - Nov 2009

Citation

Vong, S. K. S., Cheing, G. L. Y., Chan, C. C. H., Chan, F., & Leung, A. S. L. (2009). Measurement structure of the Pain Self-Efficacy Questionnaire in a sample of Chinese patients with chronic pain. Clinical Rehabilitation, 23(11), 1034-1043. doi: 10.1177/0269215509337448

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