Table 3

 Association between abdominal diameter and gastro-oesophageal reflux-type symptoms by ethnicity, with and without adjustment for body mass index

WhiteBlackAsian
Total subjects*Without adjustment for BMIWith adjustment for BMIWithout adjustment for BMIWith adjustment for BMIWithout adjustment for BMIWith adjustment for BMI
BMI, body mass index.
*Row totals by each category of abdominal diameter.
†Reference category is the lowest decile of abdominal diameter.
‡ORs adjusted for age at examination, current smoking status, BMI and current alcohol use (see text for details).
§Test for trend across categories of abdominal diameter.
Total subjects35 30728 3776207423316211424
Abdominal diameter† (cm)OR (95% CI)‡
<16.379661.001.001.001.001.001.00
16.3–17.910 2881.01 (0.89 to 1.15)1.01 (0.89 to 1.15)0.80 (0.56 to 1.12)0.80 (0.57 to 1.13)0.86 (0.52 to 1.43)0.83 (0.50 to 1.38)
18.0–19.915 6881.17 (1.05 to 1.32)1.12 (0.99 to 1.26)0.76 (0.56 to 1.04)0.75 (0.55 to 1.03)1.02 (0.64 to 1.62)0.91 (0.55 to 1.49)
20.0–21.917 1531.38 (1.23 to 1.56)1.22 (1.08 to 1.38)1.03 (0.76 to 1.39)0.98 (0.71 to 1.35)1.13 (0.69 to 1.85)0.80 (0.44 to 1.44)
22.0–23.912 7761.82 (1.61 to 2.06)1.47 (1.28 to 1.68)1.06 (0.77 to 1.46)0.85 (0.59 to 1.22)1.09 (0.58 to 2.05)0.62 (0.28 to 1.39)
24.0–25.979701.99 (1.73 to 2.29)1.62 (1.37 to 1.91)1.21 (0.86 to 1.71)0.98 (0.64 to 1.50)1.32 (0.61 to 2.84)0.86 (0.30 to 2.44)
⩾2682692.68 (2.33 to 3.08)1.85 (1.55 to 2.21)1.67 (1.18 to 2.36)0.95 (0.61 to 1.48)1.37 (0.52 to 3.57)0.64 (0.18 to 2.30)
Test for trend§p<0.01p<0.01p<0.01p = 0.11p = 0.18p = 0.78