Relationships between the Spinal Dural Pulsations and the Short-Term Efficacy of Lumbar Epidural Steroid Injection

Table 3

Correlation between the grade of spinal stenosis and postprocedure visual analogue scale (VAS) score evaluated by using Pearson coefficient.

Stenosis (N = 71)	Pre-VAS	Post-VAS (2 weeks)	Post-VAS (1 month)
Grade 1 (n = 41)	7.3 ± 0.5	3.7 ± 1.6	3.6 ± 1.6
Grade 2 (n = 18)	7.0 ± 0.2	3.7 ± 1.3	3.6 ± 1.7
Grade 3 (n = 12)	7.8 ± 0.4	4.4 ± 1.9	4.5 ± 0.9
value		0.406 (r = −0.158)	0.909 (r = 0.254)