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Q In patients with non-specific back pain associated with ⩾1 day’s absence from work, what variable or set of variables best predicts the 2 year work disability status?
Clinical impact ratings GP/FP/Primary care ★★★★★☆☆
a cohort study (Recherche sur les Affections Musculo-Squelettiques [RAMS]- Prognosis Study) with a qualitative phase to identify additional predictors, and a quantitative phase for prediction analysis. More than 100 potential predictors were measured at baseline and at 6 and 12 weeks. Predictive models of 2 year outcome were developed with recursive partitioning on a 40% random sample of the cohort, and validated in the rest.
7 primary care settings in Quebec City, Quebec, Canada.
860 adult workers (mean age 39 y, 58% men) who consulted for non-specific back pain associated with ⩾1 day’s absence from work.
Description of prediction guide:
the final model had 7 questions pertaining to patients’ recovery expectations, radiating pain, previous back surgery, …
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