Evidence map›Paper›PMID 26726833›Full record

SynthesisPLoS biology2016

Where Have All the Rodents Gone? The Effects of Attrition in Experimental Research on Cancer and Stroke.

Constance Holman, Sophie K Piper, Ulrike Grittner, Andreas Antonios Diamantaras, Jonathan Kimmelman, Bob Siegerink, Ulrich Dirnagl

Open access · goldAbstract readMeta-Analysis
In one paragraph

Synthesis in PLoS biology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 62 papers, 11 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
62citing papers in PubMed, 11 pooled it
24.3field-weighted citation impact, top 1% 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

62 citing papers in PubMed, 11 syntheses or guidelines pooled it, 118 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Pooled it
  5. Pooled it
  6. Pooled it
  7. Pooled it
  8. Pooled it
  9. Pooled it
  10. Guideline
  11. Pooled it
  12. Article
  13. Review
  14. Review
  15. Article
  16. Review
  17. Article
  18. Article
  19. ApoE Mimetic Peptides as Therapy for Traumatic Brain Injury.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2023
    Review
  20. Article

2 more citing papers are in PubMed but not listed here.

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 2 countries.

Constance HolmanMedical Neurosciences Program, Charité Universitätsmedizin Berlin, Berlin, Germany.
Sophie K PiperNeuroCure Clinical Research Center, Charité Universitätsmedizin Berlin, Berlin, Germany.
Ulrike GrittnerCenter for Stroke Research, Charité Universitätsmedizin Berlin, Berlin, Germany.
Andreas Antonios DiamantarasMedical Neurosciences Program, Charité Universitätsmedizin Berlin, Berlin, Germany.
Jonathan KimmelmanBiomedical Ethics Unit, McGill University, Montréal, Canada.
Bob SiegerinkCenter for Stroke Research, Charité Universitätsmedizin Berlin, Berlin, Germany.
Ulrich DirnaglNeuroCure Clinical Research Center, Charité Universitätsmedizin Berlin, Berlin, Germany.
Charité - Universitätsmedizin Berlin · DEGerman Center for Neurodegenerative Diseases · DEMcGill University · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Given small sample sizes, loss of animals in preclinical experiments can dramatically alter results. However, effects of attrition on distortion of results are unknown. We used a simulation study to analyze the effects of random and biased attrition. As expected, random loss of samples decreased statistical power, but biased removal, including that of outliers, dramatically increased probability of false positive results. Next, we performed a meta-analysis of animal reporting and attrition in stroke and cancer. Most papers did not adequately report attrition, and extrapolating from the results of the simulation data, we suggest that their effect sizes were likely overestimated.

Indexed as

Animal ExperimentationSample SizeAnimalsComputer SimulationNeoplasmsRodentiaStroke

Identifiers

PMID26726833
PMCPMC4699644
OpenAlexW2225825761

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.