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ArticleEuropean journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology2026

Determinants of antibiotics misuse and overuse in high-risk countries in the European region: a multidisciplinary Delphi study.

Bahar Madran, Francisco Almeida, Elena Carrara, Diamantis Kofteridis, Nuno Rocha-Pereira, Giulio Pieve, Nikolaos Tziolos, İlker Kayi, Şiran Keske, Önder Ergönül and 1 more

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Article in European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
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

1 citing paper in PubMed.

  1. 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

11 authors.

Bahar MadranDepartment of Public Health, School of Medicine, Koç University, Istanbul, Türkiye.
Francisco AlmeidaInfection and Antimicrobial Resistance Control and Prevention Unit, Hospital Epidemiology Centre, Unidade Local São João, Porto, Portugal.
Elena CarraraDivision of Infectious Diseases, Department of Diagnostic and Public Health, University of Verona, Verona, Italy.
Diamantis KofteridisDepartment of Internal Medicine and Infectious Diseases, School of Medicine, University Hospital of Heraklion, University of Crete, Heraklion, Greece.
Nuno Rocha-PereiraInfection and Antimicrobial Resistance Control and Prevention Unit, Hospital Epidemiology Centre, Unidade Local São João, Porto, Portugal.
Giulio PieveHospital Services Organization, Pisa University Hospital, Pisa, Italy.
Nikolaos TziolosDepartment of Internal Medicine and Infectious Diseases, School of Medicine, University Hospital of Heraklion, University of Crete, Heraklion, Greece.
İlker KayiDepartment of Public Health, School of Medicine, Koç University, Istanbul, Türkiye.
Şiran KeskeKoç University İşbank Center for Infectious Diseases, Istanbul, Türkiye.
Önder ErgönülKoç University İşbank Center for Infectious Diseases, Istanbul, Türkiye. oergonul@ku.edu.tr.ORCID http://orcid.org/0000-0003-1935-9235
Sibel SakaryaDepartment of Public Health, School of Medicine, Koç University, Istanbul, Türkiye.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeAntimicrobial-resistant (AMR) related deaths were predicted to have the greatest impact in Türkiye, Greece, Italy, and Portugal by 2050. Outpatient misuse and overuse of antibiotics are major contributors. We aimed to identify the underlying causes of inappropriate antibiotic use in outpatient settings and to develop context-specific, expert-driven solutions.

methodsA two-round e-Delphi process was used among experts, including primary care physicians, infectious disease specialists, ENT doctors, emergency medicine physicians, public health professionals, pharmacists, and policymakers working in outpatient settings. A 7-point Likert scale assessed 47 potential causes and 25 proposed solutions. Consensus was defined using interquartile range, median, and percent agreement. Expert agreement was assessed using Kendall's W.

results109 experts from 52 cities in Greece, Italy, Portugal, and Türkiye participated, with a response rate of 88% (109/124) in both rounds. Consensus was reached on 6 (12.76%) causes and 21 solutions (84%). Patient-related factors, such as low health literacy, limited awareness of AMR, and expectations of rapid recovery, emerged as major contributors. System-level shortcomings, including weak regulatory enforcement and underfunded stewardship efforts, were also identified. High-priority solutions included stricter regulation of non-prescription antibiotic sales, updated national prescribing guidelines, and integration of clinical decision-support tools.

conclusionAddressing AMR in high-risk countries requires both systemic reform and individual behaviour change. While common challenges exist, national differences require tailored strategies, such as healthcare accessibility, appointment length, and physician-patient communication. Sharing best practices is critical, but context-sensitive strategies are essential to effectively address this global health threat.

Indexed as

Anti-Bacterial AgentsDrug MisuseDelphi TechniqueEuropeHumansAnti-Bacterial AgentsAntimicrobial stewardshipDelphi techniqueDrug resistanceHealth literacyHealth policyInappropriate prescribingMicrobial

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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.