Results
In all 622 workers, the mean age and duration of exposure
to noise was 42.09 years (± 6.8) and 17.8 (±6.6) years,
respectively.
Average binaural hearing impairment in all workers under
study was 1.81% (± 5.4). Descriptive statistics of all workers
is shown in Table 2.
According to Table 2, average age and duration of exposure
to noise in smokers are more than that in non-smokers, but
this difference is not clinically important.