Paper: The Somatic Pre-Occupation and Coping (SPOC) questionnaire predicts return to work in tibial fracture patients

Author(s) and Affiliation(s):
Jason W. Busse, Institute for Work & Health and McMaster University
Mohit Bhandari, McMaster University
Gordon H. Guyatt, McMaster University
Diane Heels-Ansdell, McMaster University
Abhaya V. Kulkarni, University of Toronto
Scott Mandel, McMaster University
David Sanders, London Health Sciences Centre
Emil Schemitsch, University of Toronto
Marc Swiontkowski, University of Minnesota
Paul Tornetta III, Boston Medical Center
Eugene Wai, University of Ottawa
Stephen D. Walter, McMaster University
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Objectives:

To explore the role of patients’ beliefs in their likelihood of recovery from severe physical trauma.

Methods:

We developed and validated an instrument designed to capture the impact of patients' beliefs on functional recovery from injury, the Somatic Pre-Occupation and Coping (SPOC) questionnaire. At six-weeks post-surgical fixation, we administered the SPOC questionnaire to 359 consecutive patients with operatively managed tibial shaft fractures. We constructed multi-variable regression models to explore the association between SPOC scores and functional outcome at one year, as measured by return to work and short form-36 (SF-36) physical component summary (PCS) and mental component summary (MCS) scores.

Results:

In our adjusted multivariable regression models that included pre-injury SF-36 scores, SPOC scores at six-weeks post-surgery accounted for 18% of the variation in SF-36 PCS scores and 18% of SF-36 MCS scores at 1-year. SPOC scores at six-weeks post-surgery accounted for 20% of the variation in employment status at one year. In all models, six-week SPOC scores were a far more powerful predictor of functional recovery than age, gender, fracture type, smoking status or the presence of multi-trauma.

Conclusions:

The SPOC questionnaire is a valid measurement of illness beliefs in tibial fracture patients and is highly predictive of their long-term functional recovery. Future research should explore if these results extend to other trauma populations and if modification of unhelpful illness beliefs is feasible and would result in improved functional outcomes.