Table 2.

Hearing loss graded according to severity in both ears.

Ear	Hearing loss grading (dB)	Group		Total
		PXF	Control
Right	Normal (0–20)	12	24	36
	Mild (21–40)	37	20	57
	Moderate (41–60)	11	10	21
	Moderate-severe (61–80)	0	1	1
	Severe (81–100)	0	0	0
	Profound (>100)	0	0	0
Total		60	55	115
Left	Normal	16	25	41
	Mild	32	19	51
	Moderate	9	10	19
	Moderate-severe	2	1	3
	Severe	0	0	0
	Profound	0	0	0
Total		59	55	114