Skip to main content

Table 2 Comparison of hearing threshold between smoker and non-smoker workers in two separate age groups; aged 40 or less and older than 40

From: Interaction of smoking and occupational noise exposure on hearing loss: a cross-sectional study

 

Workers aged 40 or less

Workers older than 40

 

Smokers (n = 65)

Non smokers (n = 88)

P value

Odds (%95CI)

Smokers (n = 141)

Non smokers (n = 118)

P value

Odds (%95CI)

Diff. 4k-1k1 n (%)

17 (26.2)

3 (3.4)

< 0.001

10(2.8–36)

85 (60.3)

20 (16.9)

< 0.001

7.4(4.1–13.4)

> 25 dB at 4k2 n (%)

23 (35.4)

6 (6.8)

< 0.001

7.5(2.8–9.8)

108 (76.6)

32 (27.1)

< 0.001

8.8(5–15.4)

4k mean3 (SD)

24.5 (14.9)

12.2 (10.1)

< 0.001

----

38.5 (15.2)

19.5 (12.9)

< 0.001

----

  1. 1- Hearing threshold difference between 4000 Hz and 1000 Hz of greater than or equal to 30 dB in both ears
  2. 2- Hearing threshold of greater than 25dB at 4000 Hz in the better ear
  3. 3- Mean of hearing threshold at 4000 Hz (dB) in the better ear