Table 4. Percentage of patients who achieved actual (ΔAB) and clinically relevant expectations (ΔRB).^*.

	6 wk, %		6 mo, %
	ΔAB	ΔRB	ΔAB	ΔRB
ODI	37	66	50	77
Back VAS	51	72	59	76
Leg VAS	62	82	63	86

^*ODI indicates Oswestry Disability Index; VAS, Visual Analog Scale.