Evidence map›Paper›PMID 26889922›Full record

SynthesisBritish journal of clinical pharmacology2016

The association between non-vitamin K antagonist oral anticoagulants and gastrointestinal bleeding: a meta-analysis of observational studies.

Ying He, Ian C K Wong, Xue Li, Shweta Anand, Wai K Leung, Chung Wah Siu, Esther W Chan

Registry-linked trialOpen access · bronzeAbstract readComparative StudyMeta-AnalysisSystematic Review
In one paragraph

Synthesis in British journal of clinical pharmacology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04188171 (Sclerotherapy With Polidocanol Foam In The Management Of First, Second And Third-Grade Hemorrhoidal Disease In Patients With Bleeding Disorders), which is not on this map. Cited by 20 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 2 pooled it
4.9field-weighted citation impact, top 4% 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.

NCT04188171 phase2 / phase3unknown statusnot on this mapstarted 2018, after this paper: background citation

Sclerotherapy With Polidocanol Foam In The Management Of First, Second And Third-Grade Hemorrhoidal Disease In Patients With Bleeding Disorders: A Prospective Cohort Study

TypeinterventionalSponsorUniversidade do PortoRan2018 to 2021Enrolled150ConditionsHemorrhoids, Bleeding DisorderArmsPolidocanol foam sclerotherapy
3 · Its place in the literature

Who cites it

20 citing papers in PubMed, 2 syntheses or guidelines pooled it, 47 citations in OpenAlex.

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  11. Incident peptic ulcers and concomitant treatment of direct oral anticoagulants and oral bisphosphonates-a real-world cohort study.Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2022
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 3 institutions in 4 countries.

Ying HeCentre for Safe Medication Practice and Research, Department of Pharmacology and Pharmacy, The University of Hong Kong, Hong Kong.
Ian C K WongCentre for Safe Medication Practice and Research, Department of Pharmacology and Pharmacy, The University of Hong Kong, Hong Kong.
Xue LiCentre for Safe Medication Practice and Research, Department of Pharmacology and Pharmacy, The University of Hong Kong, Hong Kong.
Shweta AnandCentre for Safe Medication Practice and Research, Department of Pharmacology and Pharmacy, The University of Hong Kong, Hong Kong.
Wai K LeungDepartment of Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong.
Chung Wah SiuDepartment of Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong.
Esther W ChanCentre for Safe Medication Practice and Research, Department of Pharmacology and Pharmacy, The University of Hong Kong, Hong Kong.
Institute for Safe Medication Practices · USUniversity of Hong Kong · HKChinese University of Hong Kong · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Particular concerns have been raised regarding the association between non-vitamin K antagonist oral anticoagulants (NOACs) and the risk of gastrointestinal bleeding (GIB); however, current findings are still inconclusive. We conducted a systematic review with a meta-analysis to examine the association between NOACs and GIB in real-life settings. We performed a systematic search of PubMed, EMBASE and CINAHL Plus up to September 2015. Observational studies that evaluated exposure to NOACs reporting GIB outcomes were included. The inverse variance method using the random-effects model was used to calculate the pooled estimates. Eight cohort studies were included in the primary meta-analysis, enrolling 1442 GIB cases among 106 626 dabigatran users (49 486 patient-years), and 184 GIB cases among 10 713 rivaroxaban users (4046 patient-years). The pooled incidence rates of GIB were 4.50 [95% confidence interval (CI) 3.17, 5.84] and 7.18 (95% CI 2.42, 12.0) per 100 patient-years among dabigatran and rivaroxaban users, respectively. The summary risk ratio (RR) was 1.21 (95% CI 1.05, 1.39) for dabigatran compared with warfarin, and 1.09 (95% CI 0.92, 1.30) for rivaroxaban. Subgroup analyses showed a dose-related effect of dabigatran, with a significantly higher risk of GIB for 150 mg b.i.d. (RR = 1.51, 95% CI 1.34, 1.70) but not for 75 mg b.i.d. or 110 mg b.i.d.. In addition, the use of proton pump inhibitors (PPIs)/histamine H2-receptor antagonists (H2RAs) influenced the association in dabigatran users, whereas this effect was modest among rivaroxaban users. In conclusion, our meta-analysis suggested a slightly higher risk of GIB with dabigatran use compared with warfarin, whereas no significant difference was found between rivaroxaban and warfarin for GIB risk.

Indexed as

Administration, OralAnticoagulantsDabigatranDose-Response Relationship, DrugGastrointestinal HemorrhageHistamine H2 AntagonistsHumansProton Pump InhibitorsRivaroxabanWarfarinAnticoagulantsDabigatranHistamine H2 AntagonistsProton Pump InhibitorsRivaroxabanWarfarindabigatrangastrointestinal bleedingreal-liferivaroxaban

Identifiers

PMID26889922
PMCPMC4917795
OpenAlexW2284499677

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.