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A validation study of the Brief Scale for Psychiatric problems in Orthopaedic Patients (BS-POP) for patients with chronic low back pain (verification of reliability, validity, and reproducibility)

  • Original article
  • Published:
Journal of Orthopaedic Science

Abstract

Introduction

We developed the Brief Scale for Psychiatric problems in Orthopaedic Patients (BS-POP) (doctor and patient versions). The present study aimed to proactively verify the factorial validity, internal consistency, criterion-related validity and reproducibility of the BS-POP with regard to chronic low back pain patients.

Methods

Subjects comprised 193 chronic low back pain patients. During the first test, the BS-POP, Minnesota Multiphasic Personality Inventory (MMPI), Profile of Mood States (POMS) and 36-Item Short-Form Health Survey version 2 (SF-36 v2) were conducted. In the second test, patients were asked to complete the BS-POP in order to verify BS-POP reproducibility.

Results

Factor analysis demonstrated the factorial validity of the BS-POP, including 1-factor structure. Internal consistency was confirmed by Cronbach’s α reliability coefficients of 0.794 (doctor version) and 0.750 (patient version). Criterion-related validity was confirmed through association with the psychosocial factors of the SF-36, the MMPI, and the POMS. The correlation coefficients for the retests were r = 0.654 (doctor version) and r = 0.719 (patient version), showing reproducibility.

Discussion

The present findings indicate that the BS-POP possesses sufficient reliability regarding computational psychology. The BS-POP constitutes a tool enabling orthopaedists themselves to easily identify psychiatric problems in orthopaedic patients. Further study is required regarding responsiveness.

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Acknowledgments

We thank the many individuals who participated in the present study and the physicians who provided valuable advice. This study was supported by Research Aid from the Japanese Orthopaedic Association. We declare that we have no conflict of interest regarding the present manuscript.

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Correspondence to Katshuhiro Yoshida.

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Yoshida, K., Sekiguchi, M., Otani, K. et al. A validation study of the Brief Scale for Psychiatric problems in Orthopaedic Patients (BS-POP) for patients with chronic low back pain (verification of reliability, validity, and reproducibility). J Orthop Sci 16, 7–13 (2011). https://doi.org/10.1007/s00776-010-0012-4

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  • DOI: https://doi.org/10.1007/s00776-010-0012-4

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