Table 1 Baseline characteristics and description of the study population of cases and controls in GCs
Gastric cancer | ||
|---|---|---|
Cases ( n =244) | Controls ( n =645) | |
Age at recruitmenta | 59.1 (43.3–71.2) | 59.1 (42.8–72.1) |
Age at diagnosisa | 62.4 (44.6–74.1) | — |
Mean number of years between blood donation and diagnosisa | 3.2 (0.4–7.2) | — |
No. and (%) of Hp-positive subjects | 203 (83.2) | 432 (67.0) |
No. and (%) of Hp-negative subjects | 41 (16.8) | 213 (33.0) |
Body mass indexa | 26.2 (20.5–32.6) | 26.7 (20.9–34.2) |
No. and (%) of male subjects | 137 (56.1) | 349 (54.1) |
No. and (%) of female subjects | 107 (43.9) | 296 (45.9) |
Smoking status/duration/intensity | ||
No. and (%) of never smokers | 81 (33.2) | 289 (44.8) |
No. and (%) of ex-smokers, duration of smoking <10 years | 10 (4.1) | 28 (4.3) |
No. and (%) of ex-smokers, duration of smoking ⩾10 years | 71 (29.1) | 176 (27.3) |
No. and (%) of ex-smokers, missing duration of smoking | 5 (2.0) | 10 (1.6) |
No. and (%) of smokers, <15 cigarettes day−1 | 28 (11.5) | 58 (9.0) |
No. and (%) of smokers, ⩾15 to <25 cigarettes day−1 | 29 (11.9) | 43 (6.7) |
No. and (%) of smokers, ⩾25 cigarettes day−1 | 11 (4.5) | 13 (2.0) |
No. and (%) with missing smoking status | 9 (3.7) | 28 (4.3) |
Grouping by anatomical subsite | ||
Cardial, no. and (%) of subjects | 70 (28.7) | 176 (27.3) |
Noncardial, no. and (%) of subjects | 127 (52.0) | 344 (53.4) |
Unknown or mixed subsite, no. and (%) of subjects | 47 (19.3) | 125 (19.4) |
Grouping by histological subtype | ||
Diffuse, no. and (%) of subjects | 93 (38.1) | 244 (37.8) |
Intestinal, no. and (%) of subjects | 96 (39.4) | 256 (39.7) |
Unknown or mixed subtype, no. and (%) of subjects | 55 (22.5) | 145 (22.5) |
