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Changes in VAS score for PTG and PLSG pre− and post−treatment. (A) Frequency distribution of VAS index for PTG; (B) frequency distribution of VAS index for PLSG; (C) VAS score for PTG; (D) VAS score for PLSG; and (E) VAS index expressed in fold changes. Significant differences were considered statistically at ** p < 0.01 and *** p < 0.001. PLSG, personal low-frequency stimulation group; PTG, physical therapy group; VAS, visual analogue scale.
