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Table 1 Prevalence of respiratory outcomes in those with and without reflux symptoms and irritable bowel syndrome at age 26 years

From: Associations between respiratory symptoms, lung function and gastro-oesophageal reflux symptoms in a population-based birth cohort

  % prevalence % with respiratory condition Mean FEV1/FVC
   Asthma Wheeze Cough BDR  
No Reflux symptoms* 85.8 17.2 35.0 12.4 6.9 81.7 %
Heartburn 12.5 28.3 48.7 23.9 14.2 80.9 %
Regurgitation 6.0 38.9 62.3 35.2 18.0 79.3 %
Heartburn and regurgitation 4.1 43.2 67.6 40.5 22.9 78.9 %
Irritable Bowel Syndrome 16.7 20.4 41.7 13.2 8.4 81.5 %
  1. * excludes anyone reporting either bothersome heartburn or acid regurgitation. BDR (bronchodilator response) = 10% or greater increase in FEV1 following salbutamol.