All the subjects examined in this pilot project were
within the age group of 16-58 years. Among control 24
were males (80%) and 6 were females (20%). In the test
cases 101 were males (89%) and 13 were females (11%).
Figure 1 shows the age composition of the cases exposed
to industrial noise. It shows that the maximum number of
subjects were in the age group of 31-40 years,whereas
Table I shows the hearing loss in relation with age.