Evidence map›Paper›PMID 28852314›Full record

ArticleWorld journal of gastroenterology2017

Crohn's disease environmental factors in the developing world: A case-control study in a statewide catchment area in Brazil.

Valéria Cristina Loureiro Salgado, Ronir Raggio Luiz, Neio Boechat, Bianca C Schorr, Isabella S Leão, Tiago Nunes, Cyrla Zaltman

Open access · hybridAbstract read
In one paragraph

Article in World journal of gastroenterology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 1 pooled it
1.1field-weighted citation impact, top 19% 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

8 citing papers in PubMed, 1 synthesis or guideline pooled it, 16 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. 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

7 authors at 3 institutions in 3 countries.

Valéria Cristina Loureiro SalgadoValéria Cristina Loureiro Salgado, Bianca C Schorr, Isabella S Leão, Cyrla Zaltman, Division of Gastroenterology, Department of Internal Medicine, Clementino Fraga Filho Hospital, Federal University of Rio de Janeiro, Rio de Janeiro 21941-913, Brazil.
Ronir Raggio LuizValéria Cristina Loureiro Salgado, Bianca C Schorr, Isabella S Leão, Cyrla Zaltman, Division of Gastroenterology, Department of Internal Medicine, Clementino Fraga Filho Hospital, Federal University of Rio de Janeiro, Rio de Janeiro 21941-913, Brazil.
Neio BoechatValéria Cristina Loureiro Salgado, Bianca C Schorr, Isabella S Leão, Cyrla Zaltman, Division of Gastroenterology, Department of Internal Medicine, Clementino Fraga Filho Hospital, Federal University of Rio de Janeiro, Rio de Janeiro 21941-913, Brazil.
Bianca C SchorrValéria Cristina Loureiro Salgado, Bianca C Schorr, Isabella S Leão, Cyrla Zaltman, Division of Gastroenterology, Department of Internal Medicine, Clementino Fraga Filho Hospital, Federal University of Rio de Janeiro, Rio de Janeiro 21941-913, Brazil.
Isabella S LeãoValéria Cristina Loureiro Salgado, Bianca C Schorr, Isabella S Leão, Cyrla Zaltman, Division of Gastroenterology, Department of Internal Medicine, Clementino Fraga Filho Hospital, Federal University of Rio de Janeiro, Rio de Janeiro 21941-913, Brazil.
Tiago NunesValéria Cristina Loureiro Salgado, Bianca C Schorr, Isabella S Leão, Cyrla Zaltman, Division of Gastroenterology, Department of Internal Medicine, Clementino Fraga Filho Hospital, Federal University of Rio de Janeiro, Rio de Janeiro 21941-913, Brazil.
Cyrla ZaltmanValéria Cristina Loureiro Salgado, Bianca C Schorr, Isabella S Leão, Cyrla Zaltman, Division of Gastroenterology, Department of Internal Medicine, Clementino Fraga Filho Hospital, Federal University of Rio de Janeiro, Rio de Janeiro 21941-913, Brazil.
Universidade Federal do Rio de Janeiro · BRHospital Universitário Clementino Fraga Filho · BRNestlé (Switzerland) · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimTo identify environmental risk factors associated with the development of Crohn's disease (CD) in order to re-assess the hygiene hypothesis.

methodsA hospital-based, case-control study was carried out with CD patients (

resultsOn the univariate analysis, predictive variables for CD included being male, under age of 40, a high education level, urban dweller, smaller family size, exposure to enteric pathogens and user of treated water (

conclusionMost variables supporting the "hygiene hypothesis" are associated with the development of CD but are not independent predictors of the diagnosis.

Indexed as

Hygiene HypothesisAdultAgedAged, 80 and overAge FactorsAppendectomyBrazilCase-Control StudiesCrohn DiseaseEnvironmental ExposureFemaleHumansMaleMiddle AgedMultivariate AnalysisRisk FactorsCrohn’s diseaseEnvironmentHygiene hypothesisRisk factors

Identifiers

PMID28852314
PMCPMC5558118
OpenAlexW2746000719

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.