Self-reported asthma was biased in relation to disease severity while reported year of asthma onset was accurate

The aims of the study were to assess the accuracy of self-reported asthma and notified year of asthma onset. The study was performed on a sample of 365 subjects, 18–60 years old, with clinically diagnosed onset of asthma between 1983 and 1986. All subjects were investigated 10 years later, in 1996,...

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