Purpose: We designed a study protocol in order to evaluate the effectiveness of afternoon gastric radiography.
Methods: We examined the serum pepsinogen (PG) value and serum Helicobacter pylori (HP) antibody value of 240 participants aged 35 years or greater who consented to gastric cancer screening at the time of the staff medical screening provided by Kawasaki Medical School Kawasaki Hospital for 6 months from July 2012. The judgment criteria were PG positive for PG I ≤ 70ng/mL and PG I / II ratio ≤ 3.0, and HP positive for HP ≥ 10 µ/mL. The risk classification was Group A for PG (-) HP (-), Group B for PG (-) HP (+), Group C for PG (+) HP (+), and Group D for PG (+) HP (-), Group E for HP bacteria elimination and Group F for re-infection. Gastric cancer screening was performed for endoscopy for Group C, D and direct radiography was performed for other groups. We compared gastric cancer screening results of last time and this time (afternoon gastric radiography). Afternoon gastric radiography: Breakfast should be taken before 7 o'clock in the morning. Statistical analysis: For assumption of the complex effect for the reading evaluation a three way factorial analysis of variance is used.
Results: Of 240 staff, the gastric cancer discovery rate was 0%, and the risk classification results were 69.2% for Group A, 15.0% for Group B, 10.8% for Group C, 0.8% for Group D, 3.3% for Group E, and 0.8% for Group F. There were none that were particularly significant. Gastric radiography taken in the afternoon should be just as useful as those taken in the morning.
Conclusion: Gastric radiography is performed in the afternoon, is expected to serve as an effective screening for gastric cancer for the working population.
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