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30.06.2017 | Original Article | Ausgabe 11/2017 Open Access

European Spine Journal 11/2017

Which patient-reported factors predict referral to spinal surgery? A cohort study among 4987 chronic low back pain patients

Zeitschrift:
European Spine Journal > Ausgabe 11/2017
Autoren:
Johanna M. van Dongen, Miranda L. van Hooff, Maarten Spruit, Marinus de Kleuver, Raymond W. J. G. Ostelo
Wichtige Hinweise

Electronic supplementary material

The online version of this article (doi:10.​1007/​s00586-017-5201-9) contains supplementary material, which is available to authorized users.

Abstract

Purpose

It is unknown which chronic low back pain (CLBP) patients are typically referred to spinal surgery. The present study, therefore, aimed to explore which patient-reported factors are predictive of spinal surgery referral among CLBP patients.

Methods

CLBP patients were consecutively recruited from a Dutch orthopedic hospital specialized in spine care (n = 4987). The outcome of this study was referral to spinal surgery (yes/no), and was assessed using hospital records. Possible predictive factors were assessed using a screening questionnaire. A prediction model was constructed using logistic regression, with backwards selection and p < 0.10 for keeping variables in the model. The model was internally validated and evaluated using discrimination and calibration measures.

Results

Female gender, previous back surgery, high intensity leg pain, somatization, and positive treatment expectations increased the odds of being referred to spinal surgery, while being obese, having comorbidities, pain in the thoracic spine, increased walking distance, and consultation location decreased the odds. The model’s fit was good (X 2 = 10.5; p = 0.23), its discriminative ability was poor (AUC = 0.671), and its explained variance was low (5.5%). A post hoc analysis indicated that consultation location was significantly associated with spinal surgery referral, even after correcting for case-mix variables.

Conclusion

Some patient-reported factors could be identified that are predictive of spinal surgery referral. Although the identified factors are known as common predictive factors of surgery outcome, they could only partly predict spinal surgery referral.

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Zusatzmaterial
Supplementary material 1 (DOCX 18 kb)
586_2017_5201_MOESM1_ESM.docx
Supplementary material 2 (DOCX 20 kb)
586_2017_5201_MOESM2_ESM.docx
Supplementary material 3 (DOCX 24 kb)
586_2017_5201_MOESM3_ESM.docx
Literatur
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