3.3. Overall efficacy
After intervention, the participants were categorized into 3 groups: Recovery, Improvement, and Inefficient. Kruskal–Wallis test and Student–Newman–Keuls post hoc test showed that the overall efficacy in group A was significantly different from that in group B, C, and D; group D was different from group B and C; but group B and C were not statistically different (Overall efficacy [cases (%)].EA = electroacupuncture, LP = lumbar-pelvic training.