Table. 2.

Intragroup comparison of preT, postT, and postT3 VAS scores

VAS scores bTENS (n = 25) cTENS (n = 25) pTENS (n = 23)
Mean VAS scores
preT 6.8 ± 1.5 7 (4-10) 6.2 ± 1.7 6 (4-9) 6.6 ± 1.1 7 (5-8)
postT 2.8 ± 2.1 3 (0-9) 4.0 ± 2.3 4 (0-9) 4.5 ± 1.6 5 (1-8)
postT3 4.2 ± 2.9 4 (0-10) 3.7 ± 2.9 4 (0-10) 5.0 ± 1.9 5 (1-8)
P valuea < 0.001 < 0.001 0.016
Night-time VAS scores
preT 4.6 ± 3.0 5 (0-9) 4.4 ± 3.3 5 (0-9) 2.2 ± 2.5 6 (0-8)
postT 1.8 ± 2.4 0 (0-9) 2.7 ± 2.9 2 (0-9) 2.9 ± 3.0 3 (0-8)
postT3 2.2 ± 2.5 1 (0-10) 3.1 ± 2.3 2 (0-10) 3.6 ± 3.0 4 (0-8)
P valuea < 0.001 0.003 < 0.001

Values are presented as mean ± standard deviation or median (minimum-maximum).

preT: before treatment, postT: after treatment, postT3: third month after treatment, VAS: visual analogue scale, TENS: transcutaneous electrical nerve stimulation, bTENS: burst TENS, cTENS: conventional TENS, pTENS: placebo TENS.

aFreidman test. α = 0.05.

Korean J Pain 2021;34:217~228 https://doi.org/10.3344/kjp.2021.34.2.217
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