Evidence map›Paper›PMID 28776473›Full record

ArticleJournal of the Royal Society of Medicine2017

The history and development of N-of-1 trials.

R D Mirza, S Punja, S Vohra, G Guyatt

Registry-linked trialAbstract readHistorical Article
In one paragraph

Article in Journal of the Royal Society of Medicine, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06721871 (Evaluation of Safety, Tolerability and Efficacy of Crofelemer Following Multiple Ascending Doses of Crofelemer Powder for Oral Solution in Pediatric Participants With Microvillus Inclusion Disease), which is not on this map. Cited by 53 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
53citing papers in PubMed, 1 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.

NCT06721871 phase2 / phase3active not recruitingnot on this mapstarted 2025, after this paper: background citation

Evaluation of Safety, Tolerability and Efficacy of Crofelemer Following Multiple Ascending Doses of Crofelemer Powder for Oral Solution in Pediatric Participants With Microvillus Inclusion Disease (MVID)

TypeinterventionalSponsorNapo Pharmaceuticals, Inc.Ran2025 to 2026Enrolled6ConditionsMicrovillus Inclusion Disease, Congenital Disorders, Rare DiseasesArmsCrofelemer Powder for Oral Solution, Placebo Powder for Oral Solution
3 · Its place in the literature

Who cites it

53 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Personalized (N-of-1) Trials for Depression: A Systematic Review.Journal of clinical psychopharmacology · 2018
    Pooled it
  2. Trial
  3. Article
  4. Observational
  5. Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. When there is little or no research evidence: a clinical decision tool.The Journal of the Canadian Chiropractic Association · 2025
    Article
  11. Review
  12. Article
  13. N-of-1 tests in general practice: pharmacological considerations.The British journal of general practice : the journal of the Royal College of General Practitioners · 2025
    Article
  14. Article
  15. Article
  16. The role of single case experimental designs in evidence creation in rehabilitation.European journal of physical and rehabilitation medicine · 2024
    Article
  17. Article
  18. Review
  19. Analyzing population-level trials as N-of-1 trials: An application to gait.Contemporary clinical trials communications · 2024
    Article
  20. THE VALUE OF N-OF-1 DATA IN ZOOLOGICAL MEDICINE: A METHODOLOGICAL REVIEW.Journal of zoo and wildlife medicine : official publication of the American Association of Zoo Veterinarians · 2023
    Review
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

4 authors.

R D Mirza1 Faculty of Health Sciences, McMaster University, Hamilton, ON L8S 4L8 Ontario, Canada.
S Punja2 Department of Pediatrics, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2R3 Alberta, Canada.
S Vohra2 Department of Pediatrics, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2R3 Alberta, Canada.
G Guyatt1 Faculty of Health Sciences, McMaster University, Hamilton, ON L8S 4L8 Ontario, Canada.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

PubMed holds no abstract for this paper.

Indexed as

Clinical Trials as TopicResearch DesignHistory, 17th CenturyHistory, 20th CenturyHistory, 21st Century

Identifiers

PMID28776473
PMCPMC5546658

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

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.