The Effect of Dexmedetomidine on Lumbar Epidural Injection for Failed Back Surgery Syndrome

Table 2

Visual analogue scale of back pain.

Time	Group C ()	Group D ()	value
Before	5 (4–8)	5 (4–8)	0.973
Week 2	4 (3–7)	3 (1–5)	0.028
4	4 (3–7)	3 (2–6)	0.049
8	4 (3–7)	4 (2–6)	0.045
12	4 (3–7)	4 (2–6)	0.023

Group C: control group; group D: dexmedetomidine group; = number of patients. Data were expressed as median (interquartile range). : significant.