Exposed

n (%)

Controls

n (%)

OR

CI95%

p-value

Type of hearing loss

0.005*

Normal

32 (58.2%)

48 (87.3%)

1.00

Conductive

5 (9.1%)

2 (3.6%)

3.75

[0.76 - 27.31]

0.127

Sensorineural

14 (34.5%)

4 (7.3%)

5.25

[1.71 - 19.84]

0.007

Mixed

4 (7.3%)

1 (1.8%)

6.00

[0.84 - 120.27]

0.127

Degree of hearing loss

0.001*

Normal

32 (58.2%)

48 (87.3%)

1.00

Mild

21 (38.2%)

7 (12.7%)

4.50

[1.78 - 12.57]

0.002

Moderate

2 (3.6%)

0 (0%)

-

-

0.988

Laterality

0.001*

Normal hearing

32 (58.1)

48 (87.3)

1.00

Bilateral and

asymmetric

13 (23.6)

6 (10.9)

3.25

[1.16 - 10.08)

0.030

Bilateral and

symmetric

10 (18.2)

1 (1.8)

15.00

[2.68 - 282.01]

0.012