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Clinimetric Testing of the Lumbar Spine Instability Questionnaire.

Publication ,  Journal Article
Saragiotto, BT; Maher, CG; New, CH; Catley, M; Hancock, MJ; Cook, CE; Hodges, PW
Published in: J Orthop Sports Phys Ther
December 2018

BACKGROUND: The Lumbar Spine Instability Questionnaire (LSIQ) is a self-report measure of 15 items. Previous studies have used the LSIQ as a measure of clinical instability; however, a comprehensive evaluation of its clinimetric properties has not been conducted. OBJECTIVES: The aim of this study was to evaluate the clinimetric properties of the LSIQ in patients with chronic nonspecific low back pain (LBP). METHODS: In this clinical measurement study, the authors included patients with nonspecific LBP presenting to primary care clinicians in Australia. Rasch analysis was conducted to assess item hierarchy, targeting, unidimensionality, person fit, internal consistency, and differential item functioning. The researchers assessed test-retest reliability of total scores and individual item scores, as well as convergent and divergent validity. RESULTS: A total of 107 participants with LBP (60 men and 47 women) were recruited. The results were variable. The LSIQ appeared to constitute a unidimensional measure, targeted the sample well, and showed adequate test-retest reliability. However, the scale had poor internal consistency, did not appear to function as an interval-level measure, and had unclear construct validity. Although no items appeared to be redundant, several items were biased by factors other than the proposed construct of the measure. CONCLUSION: The LSIQ does not seem to be ready to be implemented in clinical practice and may require theoretical reconsideration. Although the LSIQ provided satisfactory estimates for some clinimetric features, the authors do not consider the instrument to be useful as an interval-level measure but rather as an index. Future studies are needed to investigate whether the LSIQ could measure clinical instability or some other construct. J Orthop Sports Phys Ther 2018;48(12):915-922. Epub 22 Jun 2018. doi:10.2519/jospt.2018.7866.

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Published In

J Orthop Sports Phys Ther

DOI

EISSN

1938-1344

Publication Date

December 2018

Volume

48

Issue

12

Start / End Page

915 / 922

Location

United States

Related Subject Headings

  • Surveys and Questionnaires
  • Self Report
  • Reproducibility of Results
  • Psychometrics
  • Orthopedics
  • Middle Aged
  • Male
  • Lumbar Vertebrae
  • Low Back Pain
  • Joint Instability
 

Citation

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Saragiotto, B. T., Maher, C. G., New, C. H., Catley, M., Hancock, M. J., Cook, C. E., & Hodges, P. W. (2018). Clinimetric Testing of the Lumbar Spine Instability Questionnaire. J Orthop Sports Phys Ther, 48(12), 915–922. https://doi.org/10.2519/jospt.2018.7866
Saragiotto, Bruno T., Chris G. Maher, Charles H. New, Mark Catley, Mark J. Hancock, Chad E. Cook, and Paul W. Hodges. “Clinimetric Testing of the Lumbar Spine Instability Questionnaire.J Orthop Sports Phys Ther 48, no. 12 (December 2018): 915–22. https://doi.org/10.2519/jospt.2018.7866.
Saragiotto BT, Maher CG, New CH, Catley M, Hancock MJ, Cook CE, et al. Clinimetric Testing of the Lumbar Spine Instability Questionnaire. J Orthop Sports Phys Ther. 2018 Dec;48(12):915–22.
Saragiotto, Bruno T., et al. “Clinimetric Testing of the Lumbar Spine Instability Questionnaire.J Orthop Sports Phys Ther, vol. 48, no. 12, Dec. 2018, pp. 915–22. Pubmed, doi:10.2519/jospt.2018.7866.
Saragiotto BT, Maher CG, New CH, Catley M, Hancock MJ, Cook CE, Hodges PW. Clinimetric Testing of the Lumbar Spine Instability Questionnaire. J Orthop Sports Phys Ther. 2018 Dec;48(12):915–922.

Published In

J Orthop Sports Phys Ther

DOI

EISSN

1938-1344

Publication Date

December 2018

Volume

48

Issue

12

Start / End Page

915 / 922

Location

United States

Related Subject Headings

  • Surveys and Questionnaires
  • Self Report
  • Reproducibility of Results
  • Psychometrics
  • Orthopedics
  • Middle Aged
  • Male
  • Lumbar Vertebrae
  • Low Back Pain
  • Joint Instability