Clinical Study

Prevalence of Occupational Asthma and Respiratory Symptoms in Foundry Workers

Table 3

The prevalance of respiratory symptoms among the foundry workers according to the use of protective mask.

ParameterPresence of protective mask ( )Absence of protective mask ( )Total ( )P

Respiratory symptoms (any one or more)44 (24.7%)38 (36.5%)820.039
Occupational asthma 19 (10.6%)29 (27.8%)480.001