Table 3.

The relationship between minimal dural sac area and multilevel stenosis on the one hand and functional status, pain, and EQ-5D on the other

	Minimal area a		Multilevel spinal stenosis
	r	p-value	r	p-value
Walking distance	–0.01	0.9	–0.02	0.8
VAS leg	–0.05	0.6	–0.24	0.03
VAS low back	–0.07	0.5	–0.09	0.4
Oswestry disability index	0.03	0.8	–0.13	0.4
SF-36, bodily pain	–0.02	0.8	0.10	0.4
SF-36, physical functioning	–0.03	0.8	–0.14	0.2
SF-36, role physical	0.09	0.4	0.12	0.3
SF-36, general health	–0.11	0.3	0.08	0.5
EQ-5D	0.13	0.3	0.03	0.8

^a Correlation between minimal dural sac area and all variables, controlling for number of levels involved.