Evidence map›Paper›PMID 31656013›Full record

SynthesisAdvances in therapy2019

Prevalence of Anal Fistulas in Europe: Systematic Literature Reviews and Population-Based Database Analysis.

Damián García-Olmo, Gert Van Assche, Ignacio Tagarro, Mary Carmen Diez, Marie Paule Richard, Javaria Mona Khalid, Marc van Dijk, Dimitri Bennett, Suvi R K Hokkanen, Julián Panés

Abstract readSystematic Review
In one paragraph

Synthesis in Advances in therapy, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers, 6 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed, 6 pooled it
–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

39 citing papers in PubMed, 6 syntheses or guidelines pooled it.

  1. Pooled it
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  9. Study on the effect and mechanism of Yanghe decoction Huacai on tissue repair ofsyndrome after anal fistula surgery.Journal of traditional Chinese medicine = Chung i tsa chih ying wen pan · 2024
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  12. Observational
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  18. Review
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  20. Depression in patients with anorectal fistulas and anal fissures: a propensity score-matched cohort study.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2025
    Article
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

10 authors.

Damián García-OlmoHospital Universitario Fundación Jiménez Díaz, Av de los Reyes Católicos, 2, 28040, Madrid, Spain. damian.garcia@uam.es.ORCID 0000-0002-9369-2338
Gert Van AsscheDepartment of Gastroenterology and Hepatology, University Hospitals Leuven and Katholic University Leuven, Leuven, Belgium.ORCID 0000-0003-0401-4664
Ignacio TagarroTakeda Spain, Madrid, Spain.ORCID 0000-0001-8975-0657
Mary Carmen DiezTiGenix (Takeda Group), Madrid, Spain.ORCID 0000-0003-3154-4038
Marie Paule RichardTiGenix (Takeda Group), Madrid, Spain.ORCID 0000-0003-3555-6503
Javaria Mona KhalidTakeda Development Centre Europe, London, UK.ORCID 0000-0003-2670-4316
Marc van DijkTakeda Development Centre Europe, London, UK.ORCID 0000-0003-0791-0480
Dimitri BennettDepartment of Pharmacoepidemiology, Takeda Pharmaceutical Company Limited, Cambridge, MA, USA.ORCID 0000-0002-8387-9342
Suvi R K HokkanenIQVIA, London, UK.ORCID 0000-0001-6520-1274
Julián PanésHospital Clinic, IDIBAPS, CIBERehd, Barcelona, Spain.ORCID 0000-0002-4971-6902

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionDespite the fact that perianal fistulas are associated with significant morbidity and impaired quality of life, their prevalence in Europe is unknown. The aim of this study was to estimate the prevalence of perianal fistulas in Europe, overall and according to etiology.

methodsTwo independent literature reviews were performed using different search strategies to maximize the identification of potentially relevant studies. Data from relevant articles were used to estimate the prevalence of perianal fistulas in Europe. The robustness of the estimate was evaluated using data from a large population-based database from the UK.

resultsA total of 26 studies provided epidemiological data on perianal fistulas, of which 16 provided suitable data to estimate the prevalence. Estimations using these data yielded a total prevalence of 1.69 per 10,000 population. Cryptoglandular infection and Crohn's disease (CD) were the predominant etiologies, with prevalence rates at 0.86 and 0.76 per 10,000 population, respectively. Comparison of prevalence data from the UK population-based database with the European population resulted in a standardized prevalence estimate of all perianal fistulas of 1.83 per 10,000 population, confirming the robustness of the literature-based estimate.

conclusionAlthough in terms of incidence cryptoglandular fistulas were clearly predominant, the prevalence of fistulas in CD and cryptoglandular infection appeared more balanced. This is due to the longer duration and higher frequency of relapses of fistulas in CD. The estimated prevalence implies that perianal fistulas meet the criteria to be considered as a rare condition in Europe (prevalence less than 5 per 10,000 population).

fundingThis study was funded by Takeda Pharmaceutical U.S.A., Inc. and TiGenix SAU.

Indexed as

AdultEuropeFemaleHumansIncidenceMaleMiddle AgedPrevalenceQuality of LifeRectal FistulaRecurrenceTime FactorsTreatment OutcomeYoung AdultAnal fistulaEpidemiologyEuropeIncidencePrevalence

Identifiers

PMID31656013
PMCPMC6860471

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.