Evidence map›Paper›PMID 23089149›Full record

SynthesisBMJ (Clinical research ed.)2012

Neglected tropical diseases: survey and geometry of randomised evidence.

Shanthi Kappagoda, John P A Ioannidis

Open access · hybridAbstract readSystematic Review
In one paragraph

Synthesis in BMJ (Clinical research ed.), 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 2 pooled it
4.6field-weighted citation impact, top 4% 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

19 citing papers in PubMed, 2 syntheses or guidelines pooled it, 43 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Dracunculiasis in oral and maxillofacial surgery.Journal of the Korean Association of Oral and Maxillofacial Surgeons · 2016
    Review
  9. Article
  10. Article
  11. Review
  12. Review
  13. Article
  14. Article
  15. Article
  16. Has the NTD community neglected evidence-based policy?PLoS neglected tropical diseases · 2013
    Article
  17. Article
  18. Article
  19. 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

2 authors at 1 institution in 1 country.

Shanthi KappagodaCenter for Primary Care and Outcomes Research and Division of Infectious Diseases and Geographic Medicine, Stanford University School of Medicine, Stanford, CA, USA.
John P A Ioannidis
Stanford University · US

Funding

Training Program in Health Services ResearchT32HS000028 · AHRQ · STANFORD UNIVERSITY · PI OWENS, DOUGLAS K · 1986 to 2012
$1.6M
OMITTEDF32HS000028 · AHRQ · STANFORD UNIVERSITY · PI LENERT, LESLIE A · 1989 to 1990
–
AHRQ HHS HS000028
6 · The paper itself

Abstract

objectiveTo assess the quantity and distribution of evidence from randomised controlled trials for the treatment of the major neglected tropical diseases and to identify gaps in the evidence with network analysis.

designSystematic review and network analysis. DATA SOURCES: Cochrane Central Register of Controlled Trials and PubMed from inception to 31 August 2011. STUDY SELECTION: Randomised controlled trials that examined treatment of 16 neglected tropical diseases or complications thereof published in English, French, Spanish, Portuguese, German, or Dutch.

resultsWe identified 971 eligible randomised trials. Leishmaniasis (184 trials, 23,039 participants) and geohelminth infections; 160 trials, 46,887 participants) were the most studied, while dracunculiasis (nine trials, 798 participants) and Buruli ulcer (five trials, 337 participants) were least studied. Relative to its global burden of disease, lymphatic filariasis had the fewest trials and participants. Only 11% of trials were industry funded. Either a single trial or trials with fewer than 100 participants comprised the randomised evidence for first or second line treatments for Buruli ulcer, human African trypanosomiasis, American trypanosomiasis, cysticercosis, rabies, echinococcosis, New World cutaneous leishmaniasis, and each of the foodborne trematode infections. Among the 10 disease categories with more than 40 trials, five lacked sufficient head to head comparisons between first or second line treatments.

conclusionsThere is considerable variation in the amount of evidence from randomised controlled trials for each of the 16 major neglected tropical diseases. Even in diseases with substantial evidence, such as leishmaniasis and geohelminth infections, some recommended treatments have limited supporting data and lack head to head comparisons.

Indexed as

Research DesignAnti-Infective AgentsBuruli UlcerDengueDracunculiasisEchinococcosisElephantiasis, FilarialHelminthiasisHumansLeishmaniasis, MucocutaneousLeprosyMulticenter Studies as TopicNeglected DiseasesRabiesRandomized Controlled Trials as TopicResearch Support as TopicAnti-Infective Agents

Identifiers

PMID23089149
PMCPMC3478233
OpenAlexW2124295042

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.