Table 1.
Baseline characteristics for ATBC study participants who did or did not develop gastric cancer in the overall study cohort and in the subgroup with both H. pylori serology and serum pepsinogen I measurements
| Cohort analysis (n=21,895) | Subset analysis (n=3,555) | |||||||
|---|---|---|---|---|---|---|---|---|
|
| ||||||||
| entire cohort | gastric cancer | controls | gastric cancer | |||||
| N | 21,895 | 329 | 3,291 | 264 | ||||
| Age, y (SD) | 57.0 | (5.0) | 57.3 | (4.9) | 58.2 | (4.9) | 58.0 | (4.9) |
| Body mass index, kg/m2 (SD) | 26.3 | (3.7) | 26.5 | (3.7) | 26.2 | (3.7) | 26.5 | (3.7) |
| Pack years of smoking (SD) | 36.3 | (18.0) | 37.6 | (19.0) | 36.8 | (17.9) | 38.7 | (19.9) |
| Alcohol intake, g (SD) | 17.3 | (20.3) | 17.3 | (20.5) | 17.3 | (21.1) | 18.1 | (21.7) |
| Daily fruit intake, g (SD) | 221.4 | (196.5) | 205.0 | (161.8) | 217.9 | (185.9) | 201.3 | (157.6) |
| Daily vegetable intake, g (SD) | 297.7 | (113.8) | 289.2 | (106.3) | 291.5 | (111.2) | 284.9 | (103.8) |
| Some high school, college, or technical school (%) | 14,772 | 67.5 | 223 | 67.8 | 2,222 | 67.5 | 177 | 67.1 |
| Low SPGI (< 25μg/l), n (%) | 1,791 | 8.2 | 58 | 17.6 | 298 | 9.1 | 51 | 19.3 |
| H. pylori seropositivity, n (%) | 2,536 | 77.1 | 224 | 84.9 | ||||
Abbreviations: ATBC - Alpha-Tocopherol, Beta-Carotene Cancer Prevention, SD - Standard deviation, SPGI – serum pepsinogen I