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| Study | Sample | Case group | Control group | |||
|---|---|---|---|---|---|---|
| HPa | PCb | HP | PC | |||
| Hirabayashi | 20,116 | 13,752 | 83 | 6,364 | 36 | |
| Chen X | 9,504 | 4,738 | 27 | 4,766 | 19 | |
| Hsu | 30,110 | 6,022 | 11 | 24,088 | 11 | |
| Chen Y | 9,895 | 4,834 | 15 | 5,061 | 8 | |
a, the number of patients with H. pylori infection; b, the number of patients who developed pancreatic cancer. HP, Helicobacter pylori; PC, pancreatic cancer.
