Evidence map›Paper›PMID 24646768›Full record

ArticleTransplantation2014

Variation in access to the liver transplant waiting list in the United States.

Amit K Mathur, Valarie B Ashby, Douglas S Fuller, Min Zhang, Robert M Merion, Alan Leichtman, John Kalbfleisch

Abstract readComparative Study
In one paragraph

Article in Transplantation, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed
3.0field-weighted citation impact, top 8% 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

43 citing papers in PubMed, 88 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Geographic variation in utilization of deceased donor livers in the United States in the era of advanced perfusion.Liver transplantation : official publication of the American Association for the Study of Liver Diseases and the International Liver Transplantation Society · 2026
    Article
  5. Access to early liver transplantation is adversely impacted by social determinants of health: A retrospective cohort study.Liver transplantation : official publication of the American Association for the Study of Liver Diseases and the International Liver Transplantation Society · 2025
    Article
  6. Insights Into Liver Transplant Disparities.Gastroenterology & hepatology · 2025
    Article
  7. Article
  8. Racial and ethnic disparities in liver transplant access vary within and across transplant referral regions.Liver transplantation : official publication of the American Association for the Study of Liver Diseases and the International Liver Transplantation Society · 2025
    Article
  9. Article
  10. Article
  11. Article
  12. Where you live matters: Area deprivation predicts poor survival and liver transplant waitlisting.American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons · 2024
    Article
  13. Article
  14. Article
  15. Article
  16. Review
  17. Identifying and understanding variation in population-based access to liver transplantation in the United States.American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons · 2023
    Article
  18. Article
  19. Article
  20. [Clinical study of heparin anticoagulation scheme during plasma adsorption therapy for liver failure].Zhonghua gan zang bing za zhi = Zhonghua ganzangbing zazhi = Chinese journal of hepatology · 2022
    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

7 authors at 2 institutions in 1 country.

Amit K Mathur1 Department of Surgery, University of Michigan Ann Arbor, MI. 2 Department of Biostatistics, University of Michigan Ann Arbor, MI. 3 Kidney Epidemiology and Cost Center, University of Michigan Ann Arbor, MI. 4 Arbor Research Collaborative for Health, Ann Arbor, MI. 5 Department of Medicine, University of Michigan Ann Arbor, MI. 6 Address correspondence to: Amit K. Mathur, M.D., M.S., 2922 Taubman Center, SPC 5300, 1500 East Medical Center Drive, Ann Arbor, MI 48109-5300.
Valarie B Ashby
Douglas S Fuller
Min Zhang
Robert M Merion
Alan Leichtman
John Kalbfleisch
University of Michigan–Ann Arbor · USArbor Research Collaborative for Health · US

Funding

University of Michigan Surgical Oncology Research Training ProgramT32CA009672 · NCI · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI JACQUELINE SARA JERUSS, WEIPING ZOU · 1991 to 2026
$6.0M
NCI NIH HHS T32 CA009672
6 · The paper itself

Abstract

backgroundWe sought to compare liver transplant waiting list access by demographics and geography relative to the pool of potential liver transplant candidates across the United States using a novel metric of access to care, termed a liver wait-listing ratio (LWR).

methodsWe calculated LWRs from national liver transplant registration data and liver mortality data from the Scientific Registry of Transplant Recipients and the National Center for Healthcare Statistics from 1999 to 2006 to identify variation by diagnosis, demographics, geography, and era.

resultsAmong patients with ALF and CLF, African Americans had significantly lower access to the waiting list compared with whites (acute: 0.201 versus 0.280; pre-MELD 0.201 versus 0.290; MELD era: 0.201 versus 0.274; all, P<0.0001) (chronic: 0.084 versus 0.163; pre-MELD 0.085 versus 0.179; MELD 0.084 versus 0.154; all, P<0.0001). Hispanics and whites had similar LWR in both eras (both P>0.05). In the MELD era, female subjects had greater access to the waiting list compared with male subjects (acute: 0.428 versus 0.154; chronic: 0.158 versus 0.140; all, P<0.0001). LWRs varied by three-fold by state (pre-MELD acute: 0.122-0.418, chronic: 0.092-0.247; MELD acute: 0.121-0.428, chronic: 0.092-0.243).

conclusionsThe marked inequity in early access to liver transplantation underscores the need for local and national policy initiatives to affect this disparity.

Indexed as

Waiting ListsAdultAgedBlack or African AmericanEnd Stage Liver DiseaseFemaleHealthcare DisparitiesHealth Care RationingHealth Services AccessibilityHealth Services Needs and DemandHispanic or LatinoHumansLiver Failure, AcuteLiver TransplantationMaleMiddle Aged

Identifiers

PMID24646768
PMCPMC4211283
OpenAlexW1964183098

What OpenQuestion holds

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LicenceTDM
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.