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

Table 2

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

		Preoperative tinnitus
Preoperative hearing level		N	%
GRC1-GRC2	43	32	74
GRC3-GRC4	38	34	90
GRC5	8	7	88
Postoperative hearing level	N	N	%
GRC1-GRC2	9	7	78
GRC3-GRC4	8	6	75
GRC5	72	60	83

GRC: Gardner-Robertson’s classification.