Does Attempt at Hearing Preservation Microsurgery of Vestibular Schwannoma Affect Postoperative Tinnitus?

Table 4

Prevalence of the new postoperative tinnitus according to the pre- and postoperative hearing level.

		New tinnitus
Preoperative hearing level	N	N	%
GRC1-GRC2	43	2	5
GRC3-GRC4	38	2	5
GRC5	8	0	0
Postoperative hearing level	N	N	%
GRC1-GRC2	9	0	0
GRC3-GRC4	8	1	13
GRC5	72	3	4

GRC: Gardner-Robertson’s classification.