Table 7. Comparison of ACC waves latencies among all gap durations in the control group.

Wave latency	Gaps	Median (IQR)	P value of Friedman’s Test	Pairwise comparison
				Gaps	P value
Friedman’s test, *statistically significant p value ≤ 0.05.
2P1	20 msec	74.00 (53-77)	0.000*	20-12	0.058
				20-8	0.000*
	12 msec	70.00 (58-74)		20-4	0.000*
				20-2	0.000*
	8 msec	64.00 (50-67)		12-8	0.000*
				12-4	0.000*
	4 msec	50.00 (45-67)		12-2	0.000*
				8-4	0.001*
	2 msec	43.50 (32.25-59)		8-2	0.000*
				4-2	0.000*
2N1	20 msec	110.00 (98-111)	0.000*	20-12	0.732
				20-8	0.000*
	12 msec	107.00 (96-110)		20-4	0.000*
				20-2	0.000*
	8 msec	98.00 (86-100)		12-8	0.000*
				12-4	0.000*
	4 msec	88.00 (84-100)		12-2	0.000*
				8-4	0.002*
	2 msec	80.00 (74-88)		8-2	0.000*
				4-2	0.000*
2P2	20 msec	159.00 (150-163)	0.000*	20-12	0.011*
				20-8	0.000*
	12 msec	158.00 (149-161)		20-4	0.000*
				20-2	0.000*
	8 msec	147.00 (128-158)		12-8	0.008*
				12-4	0.000*
	4 msec	132.00 (125-148)		12-2	0.000*
				8-4	0.008*
	2 msec	123.50 (100-132)		8-2	0.000*
				4-2	0.001*