[Clinical and pathogenetic features of occupational bronchitis]. 
With multidimentional correlation analysis, the authors studied clinical and pathogenetic features of occupational bronchitis development.  Analysis covered relationships of symptoms and syndromes of the disease, main spirometric signs of bronchial obstruction, presence and character of exogenic risk factors and the patients age.  The authors revealed regularities of interrelations of clinical, instrumental and environmental characteristics of dust diseases, their role in unfavorable course and outcomes of occupational bronchitis.