The Frequency of Bronchial Asthma in Swedish School Children

Summary The frequency of bronchial asthma in Swedish schools was investigated. The incidence in elementary schools during two school‐years with available official reports was 0.73 per cent. The number of children examined was 235,000 and 247,000 in the two groups. In the higher‐grade schools (number of pupils 87,000–138,000) the incidence during the last eight years varied between 0.39 and 0.58 per cent. These figures must be regarded as minimum values. A special study of the conditions in the elementary schools in Stockholm in the spring of 1953 (60,000 pupils) showed an incidence of 1.37 per cent.