Table 2

Grand averaged pure tone air conduction thresholds (dB HL) of 190 patients

Hz
250
500
1000
2000
3000
4000
6000
8000

Right Ear
14.1 ± 11.0
12.6 ± 12.3
16.0 ± 14.5
21.2 ± 19.0
33.3 ± 24.4
43.6 ± 25.1
46.4 ± 25.6
48.1 ± 27.0
Left Ear
15.1 ± 14.2
14.5 ± 15.6
16.3 ± 16.2
24.2 ± 21.7
36.9 ± 23.6
45.0 ± 25.1
47.9 ± 25.0
49.6 ± 26.9

Folmer BMC Ear, Nose and Throat Disorders 2002 2:3   doi:10.1186/1472-6815-2-3