TABLE 4.

Difference test of BAEP latency score between the two groups after treatment.

Group	Time point	Grade I waves	Grade III waves	Grade V waves	The peaks of the grade I and the grade III wave	The peaks of the grade III and the grade V wave
Control group	Before treatment	1.91 ± 0.12	4.25 ± 0.17	6.94 ± 0.25	2.30 ± 0.10	2.32 ± 0.23
	30 days after treatment	1.91 ± 0.12 ②	4.21 ± 0.16②	6.83 ± 0.24②	2.19 ± 0.10②	2.21 ± 0.23②
	60 days after treatment	1.90 ± 0.12②③	4.15 ± 0.16②③	6.82 ± 0.23②③	2.16 ± 0.08②③	2.18 ± 0.20②③
Treatment group	Before treatment	1.90 ± 0.13①	4.23 ± 0.18①	6.95 ± 0.27①	2.31 ± 0.12①	2.32 ± 0.23①
	30 days after treatment	1.81 ± 0.15①②	4.03 ± 0.14①②	6.25 ± 0.29①②	2.10 ± 0.13①②	2.08 ± 0.16①②
	60 days after treatment	1.69 ± 0.09①②③	3.91 ± 0.10①②③	5.78 ± 0.41①②③	2.02 ± 0.05①②③	1.91 ± 0.09①②③

① means that the mean values of the treatment group and the control group were significantly different at the same time point. ② means that the mean value at this time point is significantly different from that before treatment. ③ means that the mean value at this time point is significantly different from that after 30 days of treatment.