Evidence map›Paper›PMID 19182830›Full record

ArticleBone marrow transplantation2009

Are there roles for observational database studies and structured quantification of expert opinion to answer therapy controversies in transplants?

R P Gale, M Eapen, B Logan, M-J Zhang, H M Lazarus

Erratum issuedAbstract read
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In one paragraph

Article in Bone marrow transplantation, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing 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.

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

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

  1. Pooled it
  2. Trial
  3. Article
  4. Article
  5. Article
  6. Article
  7. Standardizing haematopoietic cell transplants in China.Journal of hematology & oncology · 2018
    Article
  8. Article
  9. Review
  10. Comparison of Characteristics and Outcomes of Trial Participants and Nonparticipants: Example of Blood and Marrow Transplant Clinical Trials Network 0201 Trial.Biology of blood and marrow transplantation : journal of the American Society for Blood and Marrow Transplantation · 2015
    Article
  11. Article
  12. Who is the best alternative allotransplant donor?Bone marrow transplantation · 2015
    Article
  13. Review
  14. Review
  15. Article
  16. Markov model of CLL transplants.Bone marrow transplantation · 2012
    Article
  17. Review
4 · The record

Corrections and comments

  • Erratum issued
5 · Who and what money

Authors and funding

5 authors.

R P GaleCenter for International Blood and Marrow Research (CIBMTR), Medical College of Wisconsin, Milwaukee, WI, USA. robertpetergale@aol.com
M Eapen
B Logan
M-J Zhang
H M Lazarus

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Approaches to determine whether one transplant-related therapy is better than another include: (1) using experimental data, such as those from randomized controlled trials (RCTs); (2) using observational data, such as those from observational databases (ODBs) and (3) using conclusions from the structured quantification of expert opinion based on a consideration of evidence from RCTs, ODBs and other sources. Large RCTs are widely and appropriately regarded as the gold standard of clinical investigation. However, data from large RCTs are rarely available for transplant-related therapy questions. We discuss some of the limitations of RCTs in the transplant setting often including small size and short follow-up. These limitations are only partly solved by meta-analyses of RCTs. Data from high-quality ODBs are not only often useful in this setting but also have limitations. Biases may be difficult or impossible to identify and/or adjust for. However, ODBs have large numbers of diverse subjects receiving diverse therapies and analyses that often give answers more useful to clinicians than RCTs. Side-by-side comparisons suggest analyses from high-quality ODBs often give similar conclusions to meta-analyses of high-quality RCTs. Meta-analyses combining data from RCTs and ODBs are sometimes appropriate. Quantitation of expert opinion, when of high quality, is also useful: experts rarely disagree under precisely defined circumstances and their consensus conclusions are often concordant with results of high-quality RCTs and ODBs. We suggest increased use of ODBs and expert opinion as reliable and effective ways to determine relative efficacies of new therapies in transplant settings.

Indexed as

Bone Marrow TransplantationDatabases, FactualHumansMeta-Analysis as TopicMulticenter Studies as TopicRandomized Controlled Trials as TopicReproducibility of ResultsTreatment Outcome

Identifiers

PMID19182830

What OpenQuestion holds

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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.