Mean BC threshold difference between diseased and control ear/study

0.5 KHz

1 KHz

2 KHz

4 KHz

Ahmed et al.

4.1 dB

6.0 dB

10.7 dB

9.7 dB

Chatterji et al.

0.61 dB

4.33 dB

3.64 dB

1.71dB

Sharma et al.

2.6 dB

3.4 dB

4.4 dB

1.8 dB

Noordzig et al.

-0.5 dB

0.9 dB

4.4 dB

3.6 dB

Kolo et al.

21.69 dB

25.66 dB

32.28 dB

34. 63 dB

Present study

1.05 dB

1.9 dB

3.95 dB

4.45 dB