TABLE 2.

Comparison of auditory and neuro-electrophysiological results between the affected side (with typewriter tinnitus) and unaffected side (without typewriter tinnitus) of all patients (n = 18)

Valuables	Unaffected Side (n = 18)	Affected Side (n = 18)	p
PTA (median [IQR], dB HL)	15.6 (10.0–27.8)	16.3 (10.9–27.8)	0.815
ABR
I wave latency (median [IQR], ms)	1.6 (1.6–1.7)	1.7 (1.6–1.7)	0.321
III wave latency (mean ± SD, ms)	3.9 (3.8–4.1)	4.1 (4.0–4.3)	0.002 *
V wave latency (median [IQR], ms)	5.7 (5.6–5.8)	5.9 (5.8–6.1)	0.030 *
IPL I-III (median [IQR], ms)	2.3 (2.2–2.3)	2.4 (2.3–2.5)	<0.001 *
IPL III-V (mean ± SD, ms)	1.8 ± 0.1	1.8 ± 0.1	0.572
IPL I-III ≥2.3 ms (n, %)
No	14 (77.8)	0 (0.0)	<0.001 *
Yes	3 (16.7)	18 (100.0)
Absent response	1 (5.5)	0 (0.0)

^*P < 0.05.

ABR, auditory brainstem response; IPL, interpeak latency; IQR, interquartile range; PTA, pure-tone audiometry; SD, standard deviation.