Trial reportJournal of the Chinese Medical Association : JCMA2021
Omeprazole vs famotidine for the prevention of gastroduodenal injury in high-risk users of low-dose aspirin: A randomized controlled trial.
Trial report in Journal of the Chinese Medical Association : JCMA, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 3 of them syntheses that pooled 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.
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.
Who cites it
7 citing papers in PubMed, 3 syntheses or guidelines pooled it, 7 citations in OpenAlex.
- Evidence-based clinical practice guidelines for peptic ulcer disease 2026.Journal of gastroenterology · 2026Guideline
- Proton pump inhibitors for prevention of upper and lower gastrointestinal bleeding in patients taking aspirin: a systematic review and meta-analysis.European journal of clinical pharmacology · 2026Pooled it
- Pantoprazole and Vonoprazan Performed Well in Preventing Peptic Ulcer Recurrence in Low-Dose Aspirin Users.Digestive diseases and sciences · 2024Pooled it
- [Lactate induces gastric mucosal injury by promoting M1 polarization of macrophagesNan fang yi ke da xue xue bao = Journal of Southern Medical University · 2026Article
- Review
- Xiaojianzhong decoction attenuates aspirin-induced gastric mucosal injury via the PI3K/AKT/mTOR/ULK1 and AMPK/ULK1 pathways.Pharmaceutical biology · 2023Article
- Proton pump inhibitors and gastroprotection in patients treated with antithrombotic drugs: A cardiologic point of view.World journal of cardiology · 2023Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
11 authors at 5 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundLow-dose aspirin is widely used in the prevention of cardiovascular diseases. However, the use of aspirin is associated with an increased risk of gastrointestinal injury.
methodsLow-dose aspirin users with a history of peptic ulcers who did not have gastroduodenal mucosal breaks at initial endoscopy were randomly assigned to receive famotidine (20 mg bid) or omeprazole (20 mg qd) for 6 months. Follow-up endoscopy was performed at the end of the sixth month and whenever epigastric discomfort, hematemesis, or melena occurred. The primary end point was the occurrence of gastroduodenal mucosal breaks. The secondary end points were (1) the occurrence of gastroduodenal ulcers and (2) the occurrence of gastroduodenal bleeding.
resultBetween November 2013 and June 2018, 170 patients were randomly assigned to receive either famotidine (n = 84) or omeprazole (n = 86). The incidence of gastroduodenal mucosal breaks was 33.8% among the patients receiving famotidine, and 19.8% among those receiving omeprazole (95% CI: 0.4%-27.5%; p = 0.045). The two patient groups had comparable incidence rates of gastroduodenal ulcers (20.0% vs 9.8%; p = 0.071), and gastroduodenal bleeding (2.5% vs 0%; p = 0.243). Multivariate analysis showed that use of the proton pump inhibitor was an independent protective factor (odds ratio: 0.47; 95% CI: 0.23-0.99; p = 0.047), and that smoking was a risk factor for mucosal breaks (odds ratio: 3.84; 95% CI: 1.52-9.71; p = 0.004).
conclusionProton pump inhibitor was superior to histamine-2 receptor antagonist in the prevention of gastroduodenal mucosal breaks in high-risk users of low-dose aspirin, and smoking was an independent risk factor for developing gastroduodenal mucosal breaks.
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Registered trials
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