Comparison of clinical improvements between groups

Variables TENS IFC Placebo TENS Placebo IFC P value
VAS
Initial - 2nd wk 4.00 ± 0.28 4.11 ± 0.36 3.94 ± 0.51 2.88 ± 0.50 0.625
Initial - 3rd mo 2.78 ± 0.33 2.44 ± 0.32 2.33 ± 0.54 1.05 ± 0.39 0.362
WOMAC
Initial - 2nd wk 24.05 ± 2.47 28.30 ± 3.36 22.72 ± 3.88 17.10 ± 3.40 0.981
Initial - 3rd mo 17.66 ± 2.16 15.41 ± 2.32 16.46 ± 2.89 7.81 ± 3.57 0.966
PCS
Initial - 2nd wk 5.94 ± 1.45 7.88 ± 2.32 6.33 ± 1.64 6.22 ± 1.91 0.830
Initial - 3rd mo 3.94 ± 0.97 3.11 ± 0.96 5.27 ± 2.36 2.83 ± 0.93 0.631
TUG
Initial - 2nd wk 1.72 ± 0.19 1.38 ± 0.55 1.23 ± 0.46 0.84 ± 0.12 0.133
Initial- 3rd mo 1.13 ± 0.18 0.46 ± 0.11 0.62 ± 0.20 0.24 ± 0.13 0.122
TSK
Initial - 2nd wk 3.68 ± 0.83 1.63 ± 0.60 1.66 ± 0.51 2.50 ± 0.39 0.085
Initial - 3rd mo 2.94 ± 0.68 0.78 ± 0.53 0.83 ± 0.44 1.27 ± 0.49 0.054

Values are presented as mean difference ± standard deviation.

TENS: transcutaneous electrical nerve stimulation, IFC: interferential current, VAS: visual analog scale (0–10), WOMAC: Western Ontario and McMaster Universities Osteoarthritis Index, PCS: pain catastrophizing scale, TUG: Timed Up and Go test, TSK: Tampa Scale of Kinesiophobia.

Korean J Pain 2023;36:392~403 https://doi.org/10.3344/kjp.23118
© Korean J Pain