Fig. 4

Disability trajectory of two categories of SBST for low and high ODI scores. Disability measured with the Oswestry Disability Index (higher score indicates worse functioning). The red lines represent the group with a medium/high risk score on the SBST (n = 177), the green lines represent the group with a low risk sore on SBST (n = 166). The dashed lines represent the group with high ODI scores (> 22), the continuous lines represent the group with low ODI scores (≤ 22)