Evidence map›Paper›PMID 29404747›Full record

SynthesisParasitology research2018

Does Dientamoeba fragilis cause diarrhea? A systematic review.

Zing-Wae Wong, Kate Faulder, Joan L Robinson

Abstract readSystematic Review
PubMed Publisher
In one paragraph

Synthesis in Parasitology research, 2018. 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
2.7field-weighted citation impact, top 11% 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, 40 citations in OpenAlex.

  1. Observational
  2. ACG case reports journal · 2026
    Article
  3. Article
  4. Article
  5. Article
  6. Observational
  7. A prospective analysis of clinical and parasitological outcomes after treatment or a wait-and-see approach of Dientamoeba fragilis infection in an adult general practice population.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2025
    Observational
  8. Pathogens (Basel, Switzerland) · 2024
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Paromomycin is superior to metronidazole in Dientamoeba fragilis treatment.International journal for parasitology. Drugs and drug resistance · 2019
    Article
  15. Two Drinking Water Outbreaks Caused by Wastewater Intrusion Including Sapovirus in Finland.International journal of environmental research and public health · 2019
    Article
  16. 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

3 authors at 1 institution in 1 country.

Zing-Wae WongUniversity of Alberta, Edmonton, AB, Canada.
Kate FaulderUniversity of Alberta, Edmonton, AB, Canada.
Joan L RobinsonUniversity of Alberta, Edmonton, AB, Canada. jr3@ualberta.ca.ORCID http://orcid.org/0000-0001-9831-5681
University of Alberta · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

It remains controversial whether Dientamoeba fragilis is a commensal parasite or a pathogen. The objective of this systematic review was to establish the strength of the evidence that Dientamoeba fragilis would cause diarrhea. A search was performed for studies that reported either the association between D. fragilis detection in stools and diarrhea or diarrhea outcomes with D. fragilis therapy or challenge. Data from seven studies of specific populations reported that 22% had D. fragilis in stools of which only 23% had diarrhea. Eleven studies of stool samples submitted to laboratories reported that 4.3% of individuals had D. fragilis of which 54% had diarrhea. Twelve studies reported that D. fragilis was detected from 1.6% of individuals with diarrhea and 9.6% of diarrheal stools. Five studies analyzed the prevalence of D. fragilis in individuals with and without diarrhea; the two with a statistically significant difference between groups had discordant results. The only cohort study with an appropriate control group reported diarrhea in a higher proportion of children with D. fragilis than in controls. No D. fragilis treatment studies included diarrhea as an outcome. There were only two challenge studies involving one person each. In conclusion, the evidence that D. fragilis would cause diarrhea or that treatment would hasten diarrhea resolution is inconclusive.

Indexed as

ChildCohort StudiesDiarrheaDientamoebaDientamoebiasisFecesHumansPrevalenceDiarrheaDientamoeba fragilisParasiteSystematic review

Identifiers

PMID29404747
OpenAlexW2790820629

What OpenQuestion holds

Textmetadata
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.