Evidence map›Paper›PMID 32409150›Full record

ArticleResearch in social & administrative pharmacy : RSAP2021

An evaluation of co-use of chloroquine or hydroxychloroquine plus azithromycin on cardiac outcomes: A pharmacoepidemiological study to inform use during the COVID19 pandemic.

Scott M Vouri, Thuy N Thai, Almut G Winterstein

Open access · greenAbstract readEvaluation Study
In one paragraph

Article in Research in social & administrative pharmacy : RSAP, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
1.0field-weighted citation impact, top 13% 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

16 citing papers in PubMed, 41 citations in OpenAlex.

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  14. Pharmacotherapy for hospitalized patients with COVID-19: Waiting or doing?Research in social & administrative pharmacy : RSAP · 2021
    Article
  15. COVID-19 infection and cardiac arrhythmias.Trends in cardiovascular medicine · 2020
    Review
  16. Review
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

3 authors at 2 institutions in 1 country.

Scott M VouriDepartment of Pharmaceutical Outcomes & Policy, University of Florida College of Pharmacy, Gainesville, FL, USA; Center for Drug Evaluation and Safety, University of Florida, Gainesville, FL, USA; University of Florida Health Physicians, Gainesville, FL, USA.
Thuy N ThaiDepartment of Pharmaceutical Outcomes & Policy, University of Florida College of Pharmacy, Gainesville, FL, USA.
Almut G WintersteinDepartment of Pharmaceutical Outcomes & Policy, University of Florida College of Pharmacy, Gainesville, FL, USA; Center for Drug Evaluation and Safety, University of Florida, Gainesville, FL, USA. Electronic address: almut@cop.ufl.edu.
University of Florida · USCenter for Drug Evaluation and Research · US

Funding

University of Florida Older Americans Independence Center (OAIC)P30AG028740 · NIA · UNIVERSITY OF FLORIDA · PI CHRISTIAAN LEEUWENBURGH · 2007 to 2026
$22.8M
NIA NIH HHS P30 AG028740
6 · The paper itself

Abstract

Background: Chloroquine or hydroxychloroquine (chloroquine) plus azithromycin is considered as therapy for COVID-19. With benefit evaluations underway, safety concerns due to potential additive effects on QTc prolongation should be addressed. Objective: We compared risk of cardiac adverse events between combinations of chloroquine and azithromycin and chloroquine and amoxicillin. Methods: We conducted a retrospective cohort study using the IBM MarketScan Commercial Claims and Medicare Supplemental Databases, 2005-2018. We included autoimmune disease patients aged ≥18 years initiating azithromycin or amoxicillin for ≥5 days during chloroquine treatment. Patients had continuous insurance coverage ≥6 months before combination use until 5 days thereafter or inpatient death. Two outcomes were sudden cardiac arrest/ventricular arrhythmias (SCA/VA) and cardiac symptoms. We followed patients for up to 5 days to estimate hazard ratios (HR). Covariates were adjusted using stabilized inverse probability treatment weighting. Results: We identified two SVC/VA events among >145,000 combination users. The adjusted incidence of cardiac symptoms among azithromycin and amoxicillin users was 276 vs 254 per 10,000 person-years with an adjusted HR of 1.10 (95%CI, 0.62-1.95). Conclusion: Combination use of chloroquine and azithromycin at routine doses did not show pronounced increases in arrhythmias in this real-world population, though small sample size and outcome rates limit conclusions.

Indexed as

AdolescentAdultAgedAzithromycinChloroquineCohort StudiesCOVID-19COVID-19 Drug TreatmentDrug Therapy, CombinationFemaleHeart DiseasesHumansHydroxychloroquineMaleMiddle AgedPharmacoepidemiologyAzithromycinChloroquineHydroxychloroquineCardiac eventsChloroquineCI, confidence intervalCOPD, Chronic obstructive pulmonary diseaseCOVID19FDA, U.S. Food & Drug AdministrationHR, hazard ratioHydroxychloroquineQTc prolongationSCA/VA, sudden cardiac arrest and ventricular arrhythmiasSIPTW, Standardized inverse probability treatment weighting

Identifiers

PMID32409150
PMCPMC7190482
OpenAlexW3017548614

What OpenQuestion holds

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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.