Table 4.

Mean hearing gains according to the treatment methods and audigram types

	Audiogram type
Treatment method	Descending		Ascending		Bowl		Flat		p
Group I: Oral medical therapy	PTA	N	PTA	N	PTA	N	PTA	N	0.075
	−5 dB	3	26 dB	6	5 dB	1	15 dB	7
Group II: Oral medical therapy + intratympanic steroid	9 dB	13	23 dB	9	-	18 dB	13	0.780
Group III: Oral medical therapy + hyperbaric O2	4,5 dB	6 41 dB	2	-	26.75 dB	8	0.066
Group IV: Only intratympanic steroid	27 dB	1	19 dB	4	25.8 dB	5	16.5 dB	12	0.780
p	0.150		0.620		0.333		*** 0.693

Statistics; Kruskal Wallis test (*** Mann Whitney test)

PTA: hearing gains in pure tone average; N: number of patients; dB: decibel; O₂: oxygen