WHICH SCALE TO ASSESS PAIN SELF-EFFICACY SHOWS BETTER MEASUREMENT PROPERTIES IN CHRONIC LOW BACK PAIN? A HEAD-TO-HEAD COMPARISON STUDY

Aline Mendonça Turci; Juliana Homem Padilha Spavieri; Thamiris Costa de Lima; Alexsander Pereira da Silva; Amanda Cristofolletti; Thais Cristina Chaves

doi:10.1016/j.apmr.2024.05.014

WHICH SCALE TO ASSESS PAIN SELF-EFFICACY SHOWS BETTER MEASUREMENT PROPERTIES IN CHRONIC LOW BACK PAIN? A HEAD-TO-HEAD COMPARISON STUDY

Arch Phys Med Rehabil. 2024 May 17:S0003-9993(24)01003-7. doi: 10.1016/j.apmr.2024.05.014. Online ahead of print.

Authors

Aline Mendonça Turci¹, Juliana Homem Padilha Spavieri², Thamiris Costa de Lima², Alexsander Pereira da Silva³, Amanda Cristofolletti³, Thais Cristina Chaves⁴

Affiliations

¹ Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
² Laboratory of Research on Movement and Pain (LabMovePain) - Department of Health Sciences, Ribeirão Preto Medical School, University of São Paulo & Department of Physical Therapy, University Federal of São Carlos, UFSCar; Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
³ Laboratory of Research on Movement and Pain (LabMovePain) - Department of Health Sciences, Ribeirão Preto Medical School, University of São Paulo & Department of Physical Therapy, University Federal of São Carlos, UFSCar.
⁴ Laboratory of Research on Movement and Pain (LabMovePain) - Department of Health Sciences, Ribeirão Preto Medical School, University of São Paulo & Department of Physical Therapy, University Federal of São Carlos, UFSCar; Department of Physical Therapy, University Federal of São Carlos, UFSCar. Electronic address: thaischaves@ufscar.br.

PMID: 38763345
DOI: 10.1016/j.apmr.2024.05.014

Abstract

Objective: to compare the quality of the measurement properties of PSEQ-10, PSEQ-4 and PSEQ-2 and CPSS (long-form: CPSS-LF and short-form: CPSS-SF) in patients with Chronic Low Back Pain (CLBP).

Design: Cross-sectional and longitudinal studies (measurement properties) SETTING: Outpatient Rehabilitation PARTICIPANTS: 245 participants with non-specific CLBP (18 and 60 years, 63% female) were enrolled in this study.

Interventions: Not applicable.

Main outcome measures: Pain self-efficacy questionnaires were administered in three occasions: baseline assessment, one-week after the first assessment (reliability) and after an eight-week exercise program (responsiveness). The intraclass correlation coefficient (ICC) and Cronbach's α were used to assess reliability and internal consistency, respectively. Pearson's correlation and confirmatory factor analysis were used to assess construct validity. The area under the curve and hypothesis testing were used to assess responsiveness.

Results: None difference was observed for all the questionnaires regarding internal consistency (Cronbach's α>.7), criterion validity (r>.88) and reliability (ICC>.7). The scales confirmed more than 75% of the hypotheses for the construct validity, except for CPSS-SF. PSEQ-2 did not meet the criterion for structural validity. PSEQ-10 met all the criteria for good measurement properties according to COSMIN.

Conclusions: It was not possible to calculate structural validity for PSEQ-2, CPSS-SF did not meet the criterion for suitable hypothesis testing for construct validity and all the questionnaires did not show suitable measurement error, except for the PSEQ-10. Hence, the PSEQ-10 was the unique scale that met all the criteria for good measurement properties for assessing pain self-efficacy in CLBP.

Keywords: Low Back Pain; Measurement Properties; Pain Self-Efficacy; Questionnaires.