Association between Gastric Cancer Risk and Serum Helicobacter pylori Antibody Titers

Figure 1

Patient flow. Among the 3321 primary screening subjects, 56.9% (1891/3321) showed HpAb ≥ 3.0 U/mL and 69.5% of these patients (1314/1891) could participate in secondary screening and underwent gastroendoscopy. On the other hand, 30.5% (577/1891) patients did not consult a hospital. Among 1314 patients who underwent gastroendoscopy, 386 patients consulted at Takada Chuo Hospital and underwent gastroendoscopy and 381 patients were able to evaluate severity of endoscopic atrophy and Hp infection status. On the other hand, 5 patients with past history of gastric surgery were excluded. In addition, 39 patients with past history of eradication therapy for H. pylori infection were included.