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Table 2 STarT Back Tool risk groups and 30% improvement in the Roland Morris Disability score

From: Predictive ability of the start back tool: an ancillary analysis of a low back pain trial from Danish general practice

STarT Back cut-off Low vs Medium/High Low/Medium vs High
Follow-up RR 95% CI P-value RR 95% CI P-value
4 weeks 1.64 (1.26–2.15) < 0.001 1.71 (1.18–2.49) 0.002
8 weeks 1.38 (1.13–1.70) 0.003 1.61 (1.20–2.15) < 0.001
52 weeks 1.21 (1.02–1.43) 0.040 1.36 (1.08–1.72) 0.003
  1. Note: Relative risk (RR) of not achieving a clinically relevant improvement in function (30% improvement in the Roland Morris Disability score). The higher RR comparing Low/Medium vs High is equivalent to more desirable functional outcomes for the ‘Low/Medium group’