Male/female ratio was about 1:5
Surely we evaluated only allergic dermatitis, the symptoms of which appeared not only on contaminated skin but also on wear-closed skin, the symptoms appeared after some period of contact with allergens and disappeared in several days after stopping contact with allergen. Rather great number of workers had the signs of respiratory allergy simultaneosly. Patch test with epoxy resin and amine hardener were positive in 15 workers. But of course we didn't exclude non-occupational allergy, because the pathogenetical mechanism of occupational and non-occupational allergy is the same.
So we evaluated rather predisposition to allergy in general.
First signs of skin allergy could appear from the 2nd month of work with allergens, their maximum was at length of work from 5 to 9 years.