Table 2

Outcomes

ExperimentalControl
Mean(SD)Mean(SD)
One-year outcomes of key
  variables
 Back pain (VAS)
 Back pain improvement
 ODI (0–100)
 ODI improvement
 EQ5D
 EQ5D improvement
Two-year outcomes of
  key variables
 Back pain (VAS)
 Back pain improvement
 ODI (0–100)
 ODI improvement
 EQ5D
 EQ5D improvement
  • Abbreviations: VAS, visual analog scale; ODI, Oswestry Disability Index; EQ5D, EuroQol measure.