Cited by 148Musculoskeletal pain and rehabilitationMedical Practices and RehabilitationSpine and Intervertebral Disc Pathology

Investigation of Elevated Fear-Avoidance Beliefs for Patients With Low Back Pain: A Secondary Analysis Involving Patients Enrolled in Physical Therapy Clinical Trials

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George, Steven Z., Fritz, Julie M., Childs, John D.·2008·Journal of Orthopaedic & Sports Physical Therapy

Abstract

STUDY DESIGN: Secondary analysis. OBJECTIVE: To investigate the Fear-Avoidance Beliefs Questionnaire (FABQ) for its ability to predict 6-month outcomes for patients with low back pain (LBP) participating in physical therapy clinical trials. BACKGROUND: Consistent evidence suggests that fear-avoidance beliefs are predictive of short-term outcomes for patients with LBP. However, proposed cut-off scores have not been widely investigated for longer-term outcomes in samples of patients receiving physical therapy. METHODS AND MEASURES: Subjects (n = 160) were participants in 2 separate randomized trials that used standard methodology and investigated the efficacy of physical therapy interventions for LBP. Subjects completed baseline measures of pain, disability, fear-avoidance beliefs, and physical impairment. They completed 4 weeks of randomly assigned physical therapy and were reassessed at 6 months with standard examination techniques. The accuracy of previously proposed cut-offs for elevated FABQ scores were determined by independent t tests and chi-square analysis on raw 6-month Oswestry Disability Questionnaire (ODQ) scores, 6-month ODQ change scores, and minimally clinical important difference (MCID) in ODQ scores (6 points). Next, a hierarchical regression model determined which FABQ scale better predicted 6-month ODQ scores after controlling for previously reported prognostic factors and relevant treatment parameters. Last, receiver operating characteristic curve analyses were planned to generate a range of FABQ cut-off scores that predicted 6-month MCID in the ODQ. RESULTS: The previously reported cut-off score for the FABQ physical activity scale (>14) resulted in 111 (69.4%) of 160 patients being classified as having elevated baseline scores, while the previously reported cut-off score for the FABQ work scale (>29) resulted in 19 (11.9%) of 160 patients being classified as having elevated baseline scores. Patients with elevated FABQ physical activity scale scores (>14) had no significant differences in 6-month ODQ outcomes. Patients with elevated FABQ work scale (>29) scores reported higher 6-month ODQ scores and were more likely to have reported no improvement in ODQ score. The final regression model explained 24.4% of the variance in 6-month ODQ scores, with only manipulation and exercise and the FABQ work scale as unique predictors. Fifteen of the subjects (12.7%) had a 6-month change in ODQ that indicated no improvement. The area under the receiver operating characteristic curve for the FABQ physical activity scale predicting this outcome was 0.562 (95% CI: 0.415-0.710) and for the FABQ work scale was 0.694 (95% CI: 0.542-0.846). Cut-off scores were explored for the FABQ work scale only, with positive likelihood ratios that ranged from 1.19 to 5.15 and negative likelihood ratios that ranged from 0.30 to 0.83. CONCLUSIONS: The FABQ work scale was the better predictor of self-report of disability in this sample of patients participating in physical therapy clinical trials. Future studies are necessary to further test and refine the FABQ work scale as a screening tool alone, and in combination with other examination findings.

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Crossref · 10.2519/jospt.2008.2647

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Authors
George, S. Z., Fritz, J. M., & Childs, J. D.
Affiliations
  • University of Florida Health (US)
  • Baylor University (US)
Venue
Journal of Orthopaedic & Sports Physical Therapy
Published
2008-02
Volume
38
Issue
2
Pages
50-58
ISSN
  • 0190-6011 (ISSN-L)
  • 1938-1344
OpenAlex
W2141507950
Cited by
148
References
44
Citations by year
2026: 1 · 2025: 3 · 2024: 4 · 2023: 8 · 2022: 7 · 2021: 13 · 2020: 13 · 2019: 9 · 2018: 13 · 2017: 2 · 2016: 10 · 2015: 10 · 2014: 7 · 2013: 7 · 2012: 4
FWCI
8.31
Type
journal article
Language
en
Open access
Locations
  • Journal of Orthopaedic and Sports Physical Therapy (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute of Arthritis and Musculoskeletal and Skin Diseases (R03AR051128, R-03 AR051128-01)
Topics
  • Health Sciences › Medicine › Pharmacology › Musculoskeletal pain and rehabilitation
  • Health Sciences › Health Professions › Physical Therapy, Sports Therapy and Rehabilitation › Medical Practices and Rehabilitation
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Spine and Intervertebral Disc Pathology
Keywords
fear-avoidance beliefs, low back pain, Fear-Avoidance Beliefs Questionnaire, physiotherapy, prognostic factors, cut-off values, disability outcome, physical activity beliefs, treatment response prediction, minimal clinically important difference, exercise therapy, manipulative therapy, patient-reported outcomes, long-term outcomes
MeSH terms
Adult, Chronic Disease, Disability Evaluation, Exercise Therapy, Fear, Female, Health Status Indicators, Health Surveys, Humans, Male, Prospective Studies, Surveys and Questionnaires, Regression Analysis, Treatment Outcome, Low Back Pain, Musculoskeletal Manipulations, Physical Therapy Modalities

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