Table 2. The association between brainstem auditory evoked potentials (BAEPs) changes and postoperative hearing loss

The maximal change of BAEPs (wave V)	Patients, n (%)	Postoperative hearing loss, n (%)	p-value
No change	596 (63.9)	1 ( 0.1)	< 0.001
Only latency prolongation (≥1 msec)	194 (20.8)	0
Only amplitude decrement (≥50%)	8 ( 0.9)	0
Latency prolongation (≥1 msec) with amplitude decrement (≥50%)	96 (10.3)	2 (2.0)
Transient loss	27 (2.9)	2 (7.4)
Permanent loss	11 (1.2)	6 (54.5)
Total	932	11 (1.2)