Table 4.

Repeated measures test for three measurements (baseline, 10 min, and 30 min)

Group	(A) Time	(B) Time	Differences (A – B)	p*	Difference (95% CI)
TENS 1	1a	2b	0.810	0.029	0.063 to 1.556
		3c	0.667	0.135	− 0.136 to 1.469
	2	1	−0.810	0.029	−1.556 to −0.063
		2	−0.143	1.000	−0.637 to 0.351
	3	1	−0.667	0.135	−1.469 to 0.136
		2	0.143	1.000	−0.351 to 0.637
TENS 2	1	2	−1.857	>  0.001	1.111 to 2.603
		3	2.238	>  0.001	1.436 to 3.040
	2	1	−1.857	>  0.001	−2.603 to − 1.111
		2	0.381	0.187	−0.113 to 0.875
	3	1	−2.238	>  0.001	−3.040 to −1.436
		2	−0.381	0.187	−0.875 to 0.113
Placebo	1	2	−1.762	>  0.001	−2.508 to − 1.016
		3	−2.190	>  0.001	−2.993 to −1.388
	2	1	1.762	>  0.001	1.016 to 2.508
		2	−0.429	0.110	−0.922 to 0.065
	3	1	2.190	>  0.001	1.388 to 2.993
		2	0.429	0.110	−0.065 to 0.922

Data are visual analogue scale mean

TENS transcutaneous electrical nerve stimulation, CI confidence interval

^*p values obtained from repeated measures test

^aBaseline

^bAfter 10 min

^cAfter 30 min