Opioid amount hour		Opioid (mg) in percentage of patients					Mean ± SD	P-value
Opioid amount hour		0 mg	12.5 mg	20 mg	25 mg	30 mg	Mean ± SD	P-value
2 hours after surgery	TENS group	62.5%	10%	0	27.5%	0	11.16 ± 8.12	0.514
2 hours after surgery	Placebo group	17.5%	7.5%	32.5%	42.5%	0	9.11 ± 18.06	0.514
6 hours after surgery	TENS group	95%	0	0	2.5%	2.5%	6.9 ± 1.37	0.861
6 hours after surgery	Placebo group	60%	7.5%	15%	17.5%	0	10.71 ± 8.31	0.861
12 hours after surgery	TENS group	100%	0	0	0	0	0	<0.001
12 hours after surgery	Placebo group	87.5%	7.5%	8%	0	0	5.35 ± 1.93	<0.001