Evidence map›Paper›PMID 29361002›Full record

ArticleJournal of the National Cancer Institute2018

Aspirin and Risk of Gastric Cancer After Helicobacter pylori Eradication: A Territory-Wide Study.

Ka Shing Cheung, Esther W Chan, Angel Y S Wong, Lijia Chen, Wai Kay Seto, Ian C K Wong, Wai K Leung

Open access · bronzeAbstract read
PubMed Publisher
In one paragraph

Article in Journal of the National Cancer Institute, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed, 1 pooled it
6.9field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

27 citing papers in PubMed, 1 synthesis or guideline pooled it, 64 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Review
  4. Review
  5. The Oral Microbiome and Cancer.Advances in experimental medicine and biology · 2025
    Review
  6. Review
  7. Cancer Progress and Priorities: Gastric Cancer.Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology · 2023
    Article
  8. Review
  9. Review
  10. Review
  11. Aspirin use in relation to long-term survival after gastrectomy for gastric adenocarcinoma.Gastric cancer : official journal of the International Gastric Cancer Association and the Japanese Gastric Cancer Association · 2022
    Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Chemoprevention Against Gastric Cancer.Gastrointestinal endoscopy clinics of North America · 2021
    Review
  17. Article
  18. Review
  19. Effect of aspirin use on gastric cancer incidence and survival: A systematic review and meta-analysis.JGH open : an open access journal of gastroenterology and hepatology · 2020
    Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 2 institutions in 3 countries.

Ka Shing CheungDepartment of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong.
Esther W ChanCentre for Safe Medication Practice and Research, Department of Pharmacology and Pharmacy, The University of Hong Kong, Hong Kong.
Angel Y S WongCentre for Safe Medication Practice and Research, Department of Pharmacology and Pharmacy, The University of Hong Kong, Hong Kong.
Lijia ChenDepartment of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong.
Wai Kay SetoDepartment of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong.
Ian C K WongCentre for Safe Medication Practice and Research, Department of Pharmacology and Pharmacy, The University of Hong Kong, Hong Kong.
Wai K LeungDepartment of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong.
University of Hong Kong · HKQueen Mary Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: Despite successful H. pylori (HP) eradication, some individuals remain at risk of developing gastric cancer (GC). Previous studies showed that aspirin was associated with a reduced GC risk. However, whether aspirin can reduce GC risk in HP-eradicated subjects remains unknown. We aimed to determine the chemopreventive effect of aspirin in HP-eradicated subjects. Methods: We identified subjects who had received a prescription of clarithromycin-based triple therapy for HP between 2003 and 2012 from a territory-wide health care database. The observation period started from commencement of HP therapy (index date), and the follow-up was censored at the end of the study (December 2015), death, or GC diagnosis. Aspirin use was defined as use once or more often weekly. Subjects who failed HP eradication or were diagnosed with GC within 12 months of HP therapy were excluded. The hazard ratio (HR) of GC with aspirin use was calculated by Cox model with Propensity Score adjustment for age, sex, comorbidities, and concurrent medications. All statistical tests were two-sided. Results: The median follow-up was 7.6 years (interquartile range [IQR] = 5.1-10.3 years), and 169 (0.27%) out of 63 605 patients developed GC. The incidence rate of GC was 3.5 per 10 000 person-years. Aspirin use was associated with a reduced GC risk (HR = 0.30, 95% confidence interval [CI] = 0.15 to 0.61). The risk of GC decreased with increasing frequency, duration, and dose of aspirin (all Ptrend < .001). Conclusions: Aspirin use was associated with a frequency-, dose-, and duration-dependent reduction in GC risk after HP eradication. The effect was most prominent in those who used aspirin daily or for five or more years.

Indexed as

Helicobacter pyloriAdultAgedAspirinChemopreventionClarithromycinCohort StudiesDrug Therapy, CombinationFemaleHelicobacter InfectionsHumansMaleMiddle AgedRemission InductionRisk FactorsStomach NeoplasmsAspirinClarithromycin

Identifiers

PMID29361002
OpenAlexW2768768110

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.