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Published in: BMC Musculoskeletal Disorders 1/2010

Open Access 01-12-2010 | Research article

Predictors of Shoulder Pain and Disability Index (SPADI) and work status after 1 year in patients with subacromial shoulder pain

Authors: Kaia Engebretsen, Margreth Grotle, Erik Bautz-Holter, Ole Marius Ekeberg, Jens Ivar Brox

Published in: BMC Musculoskeletal Disorders | Issue 1/2010

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Abstract

Background

Shoulder pain is a common complaint in primary health care and has an unfavourable outcome in many patients. The objectives were to identify predictors for pain and disability (SPADI) and work status in patients with subacromial shoulder pain.

Methods

Secondary analyses of data from a randomized clinical controlled trial were performed. Outcome measures were the absolute values of the combined Shoulder Pain and Disability Index (SPADI) and work status 1 year after treatment with supervised exercises (SE) or radial extracorporeal shockwave therapy (rESWT). Predictors of outcome were investigated using multiple linear regression (SPADI) and logistic regression (work status).

Results

104 patients were included. Low education (≤ 12 years), previous shoulder pain, and a high baseline SPADI score predicted poor results with these variables explaining 29.9% of the variance in SPADI score at 1 year. Low education and poor self-reported health status predicted a work status of "not working": Odds Ratio, OR = 4.3(95% CI (1.3 to 14.9)), p = 0.02 for education, and OR = 1.06 (95% CI (1.0 to 1.1)), p = 0.001 for self-reported health status, respectively. Adjustments for age, gender, and treatment group were performed, but did not change the results.

Conclusion

Education was the most consistent predictor of pain and disability, and work status at 1 year follow-up. Also, baseline SPADI score, previous shoulder pain and self-reported health status predicted outcome.

Trial registration

Clinical trials NCT00653081
Appendix
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Metadata
Title
Predictors of Shoulder Pain and Disability Index (SPADI) and work status after 1 year in patients with subacromial shoulder pain
Authors
Kaia Engebretsen
Margreth Grotle
Erik Bautz-Holter
Ole Marius Ekeberg
Jens Ivar Brox
Publication date
01-12-2010
Publisher
BioMed Central
Published in
BMC Musculoskeletal Disorders / Issue 1/2010
Electronic ISSN: 1471-2474
DOI
https://doi.org/10.1186/1471-2474-11-218

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