Table 3. Percentage of pain relief and Lumbar flexion range of motion at day 14

	100-Hz electroacupuncture		2-Hz electroacupuncture		p
	n	%	n	%
Percentage of pain relief					<0.001
≥ 90%	18	29	0	0
70 − 90%	36	58	28	45
50 − 70%	8	13	29	47
< 50%	0	0	5	8