Table 1

 Selected characteristics among cases and controls

ExposureControls (n (%))Oesophageal adenocarcinoma (n (%))Gastric cardia adenocarcinoma (n (%))Gastric non-cardia adenocarcinoma (n (%))
Total10 000 (100)287 (100)195 (100)327 (100)
Tobacco smoking status
    Non-smoker5122 (51.2)132 (46.0)87 (44.6)153 (46.8)
    Ex-smoker920 (9.2)33 (11.5)28 (14.4)30 (9.2)
    Current smoker1668 (16.7)66 (23.0)34 (17.4)80 (24.5)
    Unknown2290 (22.9)56 (19.5)46 (23.6)64 (19.6)
Use of alcohol (units/day)
    0–23854 (38.5)107 (37.3)66 (33.8)142 (43.4)
    3–151873 (18.7)64 (22.3)39 (20.0)65 (19.9)
    16–34621 (6.2)17 (5.9)18 (9.2)18 (5.5)
    >34200 (2.0)12 (4.2)5 (2.6)3 (0.9)
    Unknown3452 (34.5)87 (30.3)67 (34.4)99 (30.3)
Body mass index (kg/m2)
    <20293 (2.9)10 (3.5)3 (1.5)17 (5.2)
    20–242429 (24.3)51 (17.8)42 (21.5)80 (24.5)
    25–292770 (27.7)98 (34.1)63 (32.3)89 (27.2)
    ⩾30944 (9.4)42 (14.6)20 (10.3)28 (8.6)
    Unknown3564 (35.6)86 (30.0)67 (34.4)113 (34.6)