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Thorax 55:657-661 doi:10.1136/thorax.55.8.657
  • Original article

Declining incidence of episodes of asthma: a study of trends in new episodes presenting to general practitioners in the period 1989–98

Table 1

Results of regression analysis of the deseasonalised age specific rates for asthma episodes (and for acute bronchitis at all ages)

  • 1-150 All regression coefficients were highly significant (p<0.0001).

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