Table 3.

Comparison of the mean pain scores before and after each intervention within and among the groups.

Stages groups	4-5 cm				p a	6-7 cm				p a	8–10 cm				p a
	Before	After 10 min	After 20 min	Change before after 20 min		Before	After 10 min	After 20 min	Change before and after 20 min		Before	After 10 min	After 20 min	Change before and after 20 min
BL23 (n = 30)	9.63 ± 0.71	5.53 ± 1.00	4.96 ± 0.76	−4.66 ± 1.02	0.001	10.00 ± 0.0	5.36 ± 0.71	5.03 ± 0.85	−4.96 ±0 .85	0.001	9.66 ± 0.60	5.40 ± 6.21	4.90 ± 0.66	−5.40 ± 1.75	0.001
Sham (n = 30)	9.36 ± 0.66	9.10 ± 0.84	9.06 ± 0.82	−0.30 ± 0.74	0.46	9.83 ± 0.15	9.63 ± 0.55	9.66 ± 0.47	−0.26 ± 0.52	0.004	9.65 ± 0.71	9.73 ± 0.44	9.70 ± 0.46	−0.30 ± 0.46	0.001
Control (n = 30)	9.30 ± 0.65	9.20 ± 0.66	9.13 ± 0.68	−0.16 ± 0.64	0.250	9.93 ± 0.25	9.86 ± 0.43	9.73 ± 0.52	−0.20 ± 0.61	0.097	9.73 ± 0.58	9.86 ± 0.35	9.80 ± 0.40	−0.20 ± 0.40	0.009
p b	0.06	0.001	0.001	0.0001		0.33	0.001	0.001	0.0001		0.36	0.001	0.001	0.0001

^aFriedman's test.

^bKruskal–Wallis test.