Table 2

 Gastro-oesophageal reflux-type symptom prevalence and distribution of body mass index and abdominal diameter (stratified by gender and ethnicity)

WhiteBlackAsian
WomenMenWomenMenWomenMen
BMI, body mass index.
Totals may not equal 100%, because of rounding within each subcategory.
Total in each category (n)35 30728 3776207423316211424
Heartburn prevalence (%) (95% CI)11.2 (10.8 to 11.6)14.3 (13.8 to 15.0)18.3 (17.2 to 19.5)15.5 (14.2 to 16.9)7.1 (5.7 to 8.6)7.8 (6.4 to 9.5)
BMI (kg/m2)%
    <2013.03.28.32.828.48.6
    20–22.430.913.017.413.137.124.9
    22.5–24.926.430.623.622.520.535.3
    25–27.414.830.919.228.08.821.3
    27.5–29.97.314.913.119.13.17.4
    30–34.95.46.412.312.31.72.0
    >352.21.16.12.20.50.4
Abdominal diameter (cm)
    <16.314.84.36.83.333.611.2
    16.3–17.918.17.010.37.222.715.3
    18–19.922.916.217.914.922.425.0
    20–21.919.624.021.321.812.323.2
    22–23.911.421.516.620.85.214.7
    24–25.96.114.311.315.61.77.0
    ⩾267.212.815.916.42.24.0