Abstract
In outlining the development and course of asthma in children it is important to emphasize that, although asthma is a common illness, it is not a reportable one, and therefore its true incidence is unknown and can only be estimated indirectly. Our impressions of its frequency come from a variety of sources, none of which are comparable groups. These range from local surveys, army inductee examinations, hospital admissions, to sickness surveys of special groups. Dublin and Marks, 1 in summarizing all available statistics, in 1946, state that the incidence appears to be 0.5% for all ages for the entire country, or more than 500,000 persons excluding those who have recovered. Representative examples of these statistics are shown in Table 1. 1-6 Studies of the incidence of asthma in children and young people are even more meager than for adults. The sickness survey of Collins 5 for 18 states reports rates
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