Table 2.

Mean differences of VAS and CMI pre and post treatment of the group A and B.

	Group A	Group B	MD	t- value	P-value
	$\overline{\mathrm{X}}$ ± SD	$\overline{\mathrm{X}}$ ± SD
VAS
Pre treatment	8.71 ± 0.93	8.6 ± 0.78	0.11	0.46	.64
Post treatment	2.4 ± 0.78	2.67 ± 0.9	−0.27	−1.26	.21
MD	6.31	5.93
% of change	72.44	68.95
t-value	29.76	24.07
P-value	˂.001	˂.001
CMI (mg)
Pre treatment	669.82 ± 37.56	656.78 ± 40.64	13.04	1.24	.21
Post treatment	204.5 ± 16.76	210.57 ± 16.5	−6.07	−1.36	.17
MD	465.32	446.21
% of change	69.47	67.94
t-value	68.56	51.39
P-value	˂.001	˂.001

CMI = carbamazepine intake, MD = mean difference, P-value = probability value, SD = standard deviation, VAS = visual analog scale, $\overline{\mathrm{X}}$ = Mean.