Evidence map›Paper›PMID 29475806›Full record

SynthesisThe lancet. Gastroenterology & hepatology2018

Effects of gastroprotectant drugs for the prevention and treatment of peptic ulcer disease and its complications: a meta-analysis of randomised trials.

Benjamin Scally, Jonathan R Emberson, Enti Spata, Christina Reith, Kelly Davies, Heather Halls, Lisa Holland, Kate Wilson, Neeraj Bhala, Christopher Hawkey and 6 more

Open access · hybridAbstract readMeta-Analysis
In one paragraph

Synthesis in The lancet. Gastroenterology & hepatology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 96 papers, 7 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
96citing papers in PubMed, 7 pooled it
23.7field-weighted citation impact, top 1% 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

96 citing papers in PubMed, 7 syntheses or guidelines pooled it, 245 citations in OpenAlex.

  1. Guideline
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  10. Article
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  12. Article
  13. Management of Peptic Ulcer Disease in Patients Taking Antithrombotic Agents.The Korean journal of helicobacter and upper gastrointestinal research · 2026
    Review
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36 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

16 authors at 11 institutions in 6 countries.

Benjamin ScallyEmergency Department, Glasgow Royal Infirmary, Glasgow, UK; Clinical Trial Service Unit and Epidemiological Studies Unit, Nuffield Department of Population Health, Oxford, UK.
Jonathan R EmbersonMedical Research Council Population Health Research Unit, Nuffield Department of Population Health, Oxford, UK.
Enti SpataMedical Research Council Population Health Research Unit, Nuffield Department of Population Health, Oxford, UK.
Christina ReithClinical Trial Service Unit and Epidemiological Studies Unit, Nuffield Department of Population Health, Oxford, UK.
Kelly DaviesClinical Trial Service Unit and Epidemiological Studies Unit, Nuffield Department of Population Health, Oxford, UK.
Heather HallsClinical Trial Service Unit and Epidemiological Studies Unit, Nuffield Department of Population Health, Oxford, UK.
Lisa HollandClinical Trial Service Unit and Epidemiological Studies Unit, Nuffield Department of Population Health, Oxford, UK.
Kate WilsonClinical Trial Service Unit and Epidemiological Studies Unit, Nuffield Department of Population Health, Oxford, UK.
Neeraj BhalaGastroenterology and Liver Unit, Queen Elizabeth Hospital, Mindelsohn Way, Birmingham, UK; Institute of Applied Health Research, University of Birmingham, Edgbaston, UK.
Christopher HawkeyNottingham Digestive Diseases Centre, Queen's Medical Centre, Nottingham, UK.
Marc HochbergDepartment of Medicine and Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, MD, USA.
Richard HuntDivision of Gastroenterology and Farncombe Family Digestive Health Research Institute, McMaster University Health Science Centre, Hamilton, ON, Canada.
Loren LaineSection of Digestive Diseases, Yale School of Medicine, New Haven, CT, USA; VA Connecticut Healthcare System, West Haven, CT, USA.
Angel LanasService of Digestive Diseases, University Clinic Hospital, University of Zaragoza, IIS Aragón, CIBERehd, Zaragoza, Spain.
Carlo PatronoDepartment of Pharmacology, Catholic University School of Medicine, Rome, Italy.
Colin BaigentMedical Research Council Population Health Research Unit, Nuffield Department of Population Health, Oxford, UK. Electronic address: colin.baigent@ndph.ox.ac.uk.
Nuffield Health · GBMedical Research Council · GBCentro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas · ESGlasgow Royal Infirmary · GBMcMaster University · CAMRC Population Health Research UnitQueen's Medical Centre · GBUniversità Cattolica del Sacro Cuore · ITUniversity of Birmingham · GBUniversity of Maryland, Baltimore · USVA Connecticut Healthcare System · US

Funding

Yale Clinical and Translational Science Award (U Component)UL1TR001863 · NCATS · YALE UNIVERSITY · PI John H. Krystal, LUCILA OHNO-MACHADO · 2016 to 2026
$102.9M
British Heart FoundationMedical Research Council MC_U137686849Medical Research Council MC_UU_12026/6
6 · The paper itself

Abstract

backgroundGastroprotectant drugs are used for the prevention and treatment of peptic ulcer disease and might reduce its associated complications, but reliable estimates of the effects of gastroprotectants in different clinical settings are scarce. We aimed to examine the effects of proton-pump inhibitors (PPIs), prostaglandin analogues, and histamine-2 receptor antagonists (H2RAs) in different clinical circumstances by doing meta-analyses of tabular data from all relevant unconfounded randomised trials of gastroprotectant drugs.

methodsWe searched MEDLINE and Embase from Jan 1, 1950, to Dec 31, 2015, to identify unconfounded, randomised trials of a gastroprotectant drug (defined as a PPI, prostaglandin analogue, or H2RA) versus control, or versus another gastroprotectant. Two independent researchers reviewed the search results and extracted the prespecified outcomes and key characteristics for each trial. We did meta-analyses of the effects of gastroprotectant drugs on ulcer development, bleeding, and mortality overall, according to the class of gastroprotectant, and according to the individual drug within a gastroprotectant class.

findingsWe identified comparisons of gastroprotectant versus control in 849 trials (142 485 participants): 580 prevention trials (110 626 participants), 233 healing trials (24 033 participants), and 36 trials for the treatment of acute upper gastrointestinal bleeding (7826 participants). Comparisons of one gastroprotectant drug versus another were available in 345 trials (64 905 participants), comprising 160 prevention trials (32 959 participants), 167 healing trials (28 306 participants), and 18 trials for treatment of acute upper gastrointestinal bleeding (3640 participants). The median number of patients in each trial was 78 (IQR 44·0-210·5) and the median duration was 1·4 months (0·9-2·8). In prevention trials, gastroprotectant drugs reduced development of endoscopic ulcers (odds ratio [OR] 0·27, 95% CI 0·25-0·29; p<0·0001), symptomatic ulcers (0·25, 0·22-0·29; p<0·0001), and upper gastrointestinal bleeding (0·40, 0·32-0·50; p<0·0001), but did not significantly reduce mortality (0·85, 0·69-1·04; p=0·11). Larger proportional reductions in upper gastrointestinal bleeding were observed for PPIs than for other gastroprotectant drugs (PPIs 0·21, 99% CI 0·12-0·36; prostaglandin analogues 0·63, 0·35-1·12; H2RAs 0·49, 0·30-0·80; p

interpretationGastroprotectants, in particular PPIs, reduce the risk of peptic ulcer disease and its complications and promote healing of peptic ulcers in a wide range of clinical circumstances. However, this meta-analysis might have overestimated the benefits owing to small study bias.

fundingUK Medical Research Council and the British Heart Foundation.

Indexed as

Anti-Inflammatory Agents, Non-SteroidalAnti-Ulcer AgentsHistamine H2 AntagonistsHumansPeptic UlcerPeptic Ulcer HemorrhageProstaglandins, SyntheticProton Pump InhibitorsSecondary PreventionAnti-Inflammatory Agents, Non-SteroidalAnti-Ulcer AgentsHistamine H2 AntagonistsProstaglandins, SyntheticProton Pump Inhibitors

Identifiers

PMID29475806
PMCPMC5842491
OpenAlexW2788189477

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.