Longitudinal study of childhood wheezy bronchitis and asthma: outcome at age 42

Abstract
In 1964, 401 children (295 with asthma and 106 controls) were randomly selected from a total of 30 000 7 year olds living in metropolitan Melbourne. A further 83 children with severe asthma were included from the same cohort in 1967, at age 10. 2 3 Original data were available for 479 participants.