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Table 3 Respondent to the web-questionnaire by gender, BMI and coffee consumption

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

  F M Female (%) Male (%)
BMI class  
Underweight 256 44 13.6 3.9
Normal weight 1422 846 75.5 74.5
Overweight 163 203 8.7 17.9
Class I obesity 33 32 1.8 2.8
Class II obesity 5 10 0.3 0.9
Extreme obesity 5 1 0.3 0.1
Number of coffee consumed  
None 439 301 23.3 26.5
1–2 966 539 51.3 47.4
3–4 437 256 23.2 22.5
5 + 42 40 2.2 3.5
Smoking habits  
Yes 370 226 19.6 19.9
No 1514 910 80.4 80.1
  1. *P-value <0.05 for comparison between males and females distribution of the variables
  2. The original numerical variable “number of coffee” was categorized for descriptive purposes