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Table 5 Prevalence of GERD by BMI class, Smoking habits and number of coffee consumed

From: Gastroesophageal reflux symptoms among Italian university students: epidemiology and dietary correlates using automatically recorded transactions

  No GERD GERD
  n % n %
BMI class  
Underweight 216 9.7 84 10.6
Normal weight 1694 76.0 574 72.5
Overweight 265 11.9 101 12.8
Class I obesity 42 1.9 23 2.9
Class II obesity or more 11 0.5 10 1.3
Smoking habit  
Non smoker 1827 82.0 597 75.3
Smoker 401 18.0 195 24.7
Number of coffee consumed  
None 556 25.0 184 23.2
1–2 1131 50.8 374 47.2
3–4 483 21.7 210 26.5
5 or more 58 2.6 24 3.0
  1. *P-value <0.05 for comparison in GERD prevalence among groups