Table 4 Association between body mass index and gastro‐oesophageal reflux‐type symptoms by ethnicity and gender, not adjusted for abdominal diameter.
| White | Black | Asian | ||||
|---|---|---|---|---|---|---|
| Women | Men | Women | Men | Women | Men | |
| Total subjects | 35 307 | 28 377 | 6207 | 4233 | 1621 | 1424 |
| BMI (kg/m2) | ORs (95% CI)* | |||||
| <20 | 0.94 (0.81 to 1.08) | 0.92 (0.70 to 1.22) | 0.90 (0.64 to 1.27) | 0.52 (0.23 to 1.20) | 0.94 (0.55 to 1.62) | 0.53 (0.15 to 1.91) |
| 20–22.4 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 |
| 22.5–24.9 | 1.20 (1.08 to 1.34) | 1.40 (1.21 to 1.61) | 0.91 (0.70 to 1.17) | 0.88 (0.62 to 1.24) | 0.91 (0.49 to 1.69) | 2.02 (1.09 to 3.73) |
| 25–27.4 | 1.52 (1.35 to 1.72) | 1.78 (1.55 to 2.05) | 1.17 (0.89 to 1.54) | 0.94 (0.67 to 1.32) | 0.60 (0.22 to 1.61) | 1.82 (0.91 to 3.65) |
| 27.5–29.9 | 1.64 (1.40 to 1.91) | 2.18 (1.87 to 2.55) | 0.99 (0.71 to 1.36) | 1.42 (0.99 to 2.05) | 1.35 (0.44 to 4.18) | 1.82 (0.74 to 4.48) |
| 30–34.9 | 2.31 (1.96 to 2.71) | 2.47 (2.05 to 2.96) | 1.22 (0.89 to 1.68) | 1.35 (0.90 to 2.02) | 2.57 (0.80 to 8.24) | 2.97 (0.77 to 11.37) |
| >35 | 2.80 (2.25 to 3.50) | 3.01 (2.14 to 4.23) | 1.77 (1.23 to 2.56) | 2.16 (1.09 to 4.30) | NC† | 4.57 (0.47 to 44.77) |
| Test for trend | p<0.01 | p<0.01 | p<0.01 | p<0.01 | p = 0.56 | p = 0.01 |
BMI, body mass index.
*ORs adjusted for age at examination, current smoking status and current alcohol use (see text for details).
†Not calculable due to small numbers available.