On the basis of a complex examination of 118 school age children suffering from bronchial asthma it was noted that the slow type of acetylation was a marker of a more severe course of the disease that was characterized by the development of severe attacks of asthma. Thus, a relative risk of the development of a severe degree of bronchial obstruction in children with the slow type of acetylation in relation to patients with the rapid type of acetylation phenotype constituted 1,5 [95 % CI:1.1–2.1] with the ratio of chances 2,1 [95 % CI:0,8–5,0].
