Table 2.

Contingency table for 17 patients who had an initial decrease in gain at the early post-treatment time point

	AVOR gain
	increase	decrease or no change	total
Vertigo rate
Increase	1	2	3
Decrease or no change	5	9	14
Total	6	11	17

Gain values and vertigo rates correspond to the late post-treatment time points. Fourteen patients had a stable decrease in vertigo rate, while 3 patients had an increase in vertigo rate at this late post-treatment time point. One of these 3 patients had complete vertigo control immediately following IT gentamicin treatment, but reported 1 episode of vertigo at a later follow-up time point, and 2 patients had changes of 0 episodes/month increasing to 6 episodes/month, and 0 episodes/month increasing to 0.3 episodes/month. AVOR gain increased for 6 patients (by 41.48% 8 9.59%) between the early and late post-treatment time points, but decreased (by 25.88% 8 9.31%) for 3 patients or did not change for 8 patients (11 total patients).