Table 3.

Comparison of alterations in DPOAE by frequency and by ear between groups.

Frequency (Hz)	Ear	Study group (n = 39)	Control group (n = 36)	p-Valuea
1000	Right	10 (25.6)	2 (5.6)	0.040
	Left	8 (20.5)	1 (2.8)	0.029
1400	Right	3 (7.7)	1 (2.8)	0.616
	Left	3 (7.7)	0 (0.0)	0.241
2000	Right	5 (12.8)	0 (0.0)	0.055
	Left	2 (5.1)	2 (5.6)	1.000
2800	Right	6 (15.4)	3 (8.3)	0.483
	Left	5 (12.8)	1 (2.8)	0.202
4000	Right	6 (15.4)	2 (5.6)	0.265
	Left	9 (23.1)	3 (8.3)	0.154
6000	Right	13 (33.3)	1 (2.8)	0.002
	Left	16 (41.0)	3 (8.3)	0.003

^aFisher's exact test.