Observational studyGut and liver2019
ABC Classification Is Less Useful for Older Koreans Born before 1960.
Observational study in Gut and liver, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
9 citing papers in PubMed.
- A Prospective Study on the Detection of Gastric Neoplasms Using Pepsinogen and Gastrin-17 Levels.Gut and liver · 2025Observational
- Validation of the ABC Method for Gastric Cancer Risk Stratification Across Helicobacter pylori Infections With Diverse CagA Status and Subtypes in Brazil.Cancer medicine · 2025Article
- Review
- Article
- Population-based X-ray gastric cancer screening in Hiroshima prefecture, Japan.World journal of clinical oncology · 2024Article
- Useful Serum Pepsinogen Levels for Detecting Ongoing Helicobacter pylori Infection in Asymptomatic Subjects: A Cross-Sectional Study Based onDigestive diseases and sciences · 2022Article
- Different Metabolites of the Gastric Mucosa between Patients with CurrentBiomedicines · 2022Article
- Incidence of Infection among Subjects with Helicobacter pylori Seroconversion.Clinical endoscopy · 2022Article
- Classifying risk level of gastric cancer: Evaluation of questionnaire-based prediction model.Chinese journal of cancer research = Chung-kuo yen cheng yen chiu · 2020Article
Corrections and comments
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Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Background/Aims: In the ABC classification system, group A consists of seronegative subjects without gastric corpus atrophy. This study aimed to determine the prevalence and characteristics of pseudo group A subjects. Methods: Group A subjects were identified among consecutive Korean adults who underwent a serum anti- Results: Among 2,620 group A subjects, 448 (17.1%) had eradication history, and 133 (5.1%) showed endoscopic findings suggesting past infection. Older age (odds ratio [OR], 1.148; 95% confidence interval [CI], 1.067 to 1.236) and earlier year of birth (OR, 1.086; 95% CI, 1.009 to 1.168) were independent risk factors for classification into pseudo group A, with cutoff points at 50.5 years and birth year of 1959.5, respectively. Positive Conclusions: Among the group A subjects, 22.2% had past infection. The risk was higher in subjects older than 50 years, especially those born before 1960. Furthermore, current infection was found in 3.1% of the subjects and was correlated with increased gastric secretory ability.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.