Early detection of noise-induced hearing loss

doi:10.12998/wjcc.v10.i6.1815

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Feb 26, 2022 (publication date) through May 6, 2024

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World Journal of Clinical Cases

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Baishideng Publishing Group Inc, 7041 Koll Center Parkway, Suite 160, Pleasanton, CA 94566, USA

Observational Study

World J Clin Cases. Feb 26, 2022; 10(6): 1815-1825
Published online Feb 26, 2022. doi: 10.12998/wjcc.v10.i6.1815

Table 1 Lower limit at 95% of extended high-frequency audiometry thresholds (n = 86)

EHF (kHz)	mean ± SD	Min	Max	25^th	50^th	75^th	95^th
9	3.14 ± 5.26	-5.00	15.00	0.00	5.00	5.00	15.00
10	0.93 ± 5.34	-15.00	15.00	-5.00	0.00	5.00	10.00
11.2	2.50 ± 7.19	-15.00	25.00	0.00	0.00	5.00	20.00
12.5	-0.52 ± 6.90	-15.00	20.00	-5.00	0.00	5.00	15.00
14	0.52 ± 7.97	-10.00	20.00	-5.00	0.00	5.00	15.00
16	-3.08 ± 13.15	-20.00	25.00	-15.00	-5.00	5.00	20.00
18	-4.48 ± 16.09	-20.00	30.00	-20.00	-10.00	10.00	28.25
20	-13.78 ± 7.39	-25.00	15.00	-20.00	-15.00	-10.00	0.00

EHF: Extended high frequency.

Table 2 Age distribution for noise exposure and low noise exposure groups (n = 159)

Group	n	Female	Male	Mean ± SD	Min	Max	25^th	50^th	75^th
Low noise exposure	61	45	16	21.59 ± 2.00	18	25	20.00	21.00	23.50
Noise exposure	98	64	34	21.17 ± 1.55	18	25	20.00	21.00	22.00

Table 3 Thresholds of participants for conventional audiometry (n = 159)

Ear	Group	n	0.25 kHz (mean ± SD)	0.5 kHz (mean ± SD)	1 kHz (mean ± SD)	2 kHz (mean ± SD)	4 kHz (mean ± SD)	8 kHz (mean ± SD)
Right	Low noise exposure	61	7.30 (± 5.21)	7.82 (± 4.91)	6.97 (± 4.50)	6.97 (± 5.42)	4.26 (± 5.69)	7.54 (± 6.50)
Right	Noise exposure	98	6.99 (± 5.91)	7.65 (± 5.14)	8.06 (± 4.90)	8.21 (± 5.62)	5.87 (± 5.65)	8.78 (± 6.70)
Left	Low noise exposure	61	6.80 (± 5.70)	6.80 (± 4.48)	5.66 (± 4.42)	6.07 (± 5.99)	5.57 (± 5.63)	8.28 (± 6.18)
Left	Noise exposure	98	7.45 (± 5.38)	8.32 (± 5.70)	7.14 (± 5.13)	6.99 (± 5.78)	5.15 (± 5.54)	9.03 (± 6.37)

Table 4 Chi-square test results for extended high-frequency audiometry (n = 159)

Ear	Frequency (kHz)	Group	Normal (N)	Abnormal (N)	Abnormalrate (%)	χ²	P value
Right	9	0	56	5	8.2	1.33	0.25
	9	1	84	14	14.3	1.33	0.25
	10	0	51	10	16.4	2.62	0.11
	10	1	71	27	27.6	2.62	0.11
	11.2	0	58	3	4.9	2.36	0.12
	11.2	1	86	12	12.2	2.36	0.12
	12.5	0	54	7	11.5	2.13	0.15
	12.5	1	78	20	20.4	2.13	0.15
	14	0	51	10	16.4	1.47	0.23
	14	1	74	24	24.5	1.47	0.23
	16	0	52	9	14.8	1.09	0.30
	16	1	77	21	21.4	1.09	0.30
	18	0	60	1	1.6		1.00^a
	18	1	95	3	3.1		1.00^a
	20	0	57	4	6.6		0.77^a
	20	1	90	8	8.2		0.77^a
Left	9	0	52	9	14.8	0.19	0.67
	9	1	81	17	17.3	0.19	0.67
	10	0	45	16	26.2	0.74	0.39
	10	1	66	32	32.7	0.74	0.39
	11.2	0	53	8	13.1	1.02	0.31
	11.2	1	90	8	10.1	1.02	0.31
	12.5	0	51	10	16.4	0.03	0.86
	12.5	1	83	15	15.3	0.03	0.86
	14	0	50	11	18.0	0.05	0.83
	14	1	79	19	19.4	0.05	0.83
	16	0	50	11	18.0	0.05	0.83
	16	1	79	19	19.4	0.05	0.83
	18	0	57	4	6.6		0.77^a
	18	1	90	8	8.2		0.77^a
	20	0	56	5	8.2	1.33	0.25
	20	1	84	14	14.3		0.25

^aFisher’s exact probability. 0: Low noise exposure group; 1: Noise exposure group.

Table 5 Chi-square test results for distortion otoacoustic emission (n = 159)

Ear	Frequency(kHz)	Group	Normal (n)	Abnormal (N)	Abnormal rate (%)	Fisher P value
Right	1	0	60	1	1.6	0.41
	1	1	93	5	5.1	0.41
	1.5	0	61	0	0.0	0.52
	1.5	1	96	2	2.0	0.52
	2	0	61	0	0.0	0.52
	2	1	96	2	2.0	0.52
	3	0	61	0	0.0
	3	1	98	0	0.0
	4	0	61	0	0.0	1.00
	4	1	97	1	1.0	1.00
	6	0	56	5	8.2	1.00
	6	1	90	8	8.2	1.00
Left	1	0	60	1	1.6	1.00
	1	1	95	3	3.1	1.00
	1.5	0	61	0	0.0	1.00
	1.5	1	97	1	1.0	1.00
	2	0	61	0	0.0	0.52
	2	1	96	2	2.0	0.52
	3	0	60	1	1.6	1.00
	3	1	96	2	2.0	1.00
	4	0	59	2	3.3	0.15
	4	1	98	0	0.0	0.15
	6	0	56	5	8.2	0.51
	6	1	93	5	5.1	0.51

Table 6 Chi-square test results for transient evoked otoacoustic emission (n = 159)

Ear	Frequency (kHz)	Group	Normal (n)	Abnormal (n)	Abnormal rate (%)	Fisher P value
Right	1	0	61	0	0.0	1.00
	1	1	97	1	1.0	1.00
	1.5	0	61	0	0.0	1.00
	1.5	1	97	1	1.0	1.00
	2	0	60	1	1.6	0.38
	2	1	98	0	0.0	0.38
	3	0	59	2	3.3	1.00
	3	1	95	3	3.1	1.00
	4	0	56	5	5.2	0.05^a
	4	1	78	20	20.4	0.05^a
Left	1	0	60	1	1.6	0.52
	1	1	96	2	2.0	0.52
	1.5	0	61	0	0.0
	1.5	1	98	0	0.0
	2	0	60	1	1.6	1.00
	2	1	96	2	2.0	1.00
	3	0	60	1	1.6	1.00
	3	1	96	2	2.0	1.00
	4	0	58	3	4.9	0.07
	4	1	84	14	14.3	0.07

^aSignificant difference was observed at 4 kHz for the right ear.

Citation: Meng ZL, Chen F, Zhao F, Gu HL, Zheng Y. Early detection of noise-induced hearing loss. World J Clin Cases 2022; 10(6): 1815-1825
URL: https://www.wjgnet.com/2307-8960/full/v10/i6/1815.htm
DOI: https://dx.doi.org/10.12998/wjcc.v10.i6.1815