Table 1.

Baseline characteristics of patients with chronic low back pain with or without leg pain who underwent lumbar percutaneous epidural neuroplasty.

		Variable	Range
Number of patients (men : women)		78	27 : 51
Age (years)		58.1 ± 14.1	18–84
Symptom duration (months)		7.1 ± 4.1	2–31
Follow-up duration (months)		12.7 ± 1.0	11–16
VAS score	Back pain	5.8 ± 2.6	—
	Leg pain	5.0 ± 3.1	—
ODI score		19.4 ± 7.0	—
SF-12 score		30.0 ± 7.2	—

VAS: visual analog scale; ODI: Oswestry Disability Index; SF-12: 12-Item Short-Form Health Survey.