. 2023 Aug 11;9(8):e19052. doi: 10.1016/j.heliyon.2023.e19052

Table 4.

The amplitude ratio values of the ABR waves at three frequencies and three time stages in the chronic study and control groups.

Group	Amp. Ratio	Frequency [KHz]	Base	Day 14	Day 28	p.value
Group	Amp. Ratio	Frequency [KHz]	[Mean ± SD]	[Mean ± SD]	[Mean ± SD]	p.value
Control	Wave II/I	6	1.25 ± 0.18	1.17 ± 0.19	1.21 ± 0.26	0.784
		12	1.31 ± 0.13	1.31 ± 0.17	1.25 ± 0.08	0.736
		24	1.24 ± 0.15	1.24 ± 0.15	1.18 ± 0.11	0.328
	Wave IV/I	6	0.41 ± 0.10	0.38 ± 0.07	0.41 ± 0.08	0.978
		12	0.40 ± 0.06	0.35 ± 0.06	0.39 ± 0.05	0.91
		24	0.38 ± 0.08	0.42 ± 0.11	0.42 ± 0.11	0.546
	Wave V/I	6	0.28 ± 0.14	0.29 ± 0.13	0.31 ± 0.14	0.37
		12	0.31 ± 0.07	0.31 ± 0.09	0.32 ± 0.12	0.932
		24	0.28 ± 0.07	0.29 ± 0.08	0.26 ± 0.06	0.385
Study	Wave II/I	6	1.27 ± 0.34	1.41 ± 0.62	1.46 ± 0.39	0.176
		12	1.22 ± 0.13	1.63 ± 0.52	1.45 ± 0.28	*0.006*
		24	1.13 ± 0.10	1.30 ± 0.23	1.18 ± 0.17	*0.033*
	Wave IV/I	6	0.34 ± 0.18	0.90 ± 0.97	0.51 ± 0.16	*0.004*
		12	0.34 ± 0.26	0.70 ± 0.50	0.35 ± 0.16	*0.014*
		24	0.37 ± 0.07	0.67 ± 0.26	0.52 ± 0.10	*< 0.001*
	Wave V/I	6	0.32 ± 0.12	0.75 ± 0.21	0.40 ± 0.14	*< 0.001*
		12	0.30 ± 0.10	0.44 ± 0.17	0.42 ± 0.09	*< 0.001*
		24	0.26 ± 0.08	0.48 ± 0.25	0.36 ± 0.11	*0.006*