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Table 3 Demographic variables of subjects

From: Prevalence of gastro-oesophageal reflux disease symptoms and reflux-associated respiratory symptoms in asthma

  Control
(n = 202)
Asthmatic
(n = 202)
P value
Age, yrs mean (SD) 32.8 (10.2) 34.9 (11.6) 0.057*
Males, no (%) 86 (44%) 89 (44%) 0.841
BMI, kg/m2 mean (SD) 22.8 (2.84) 22.1 (3.03) 0.020*
Current smokers (%) 3.4 12.4 0.001
Current drinkers (%) 7.9 14.8 <0.001
  1. * student t-test Fisher exact test Chi squared test