Evidence map›Paper›PMID 31076173›Full record

ArticleAmerican journal of kidney diseases : the official journal of the National Kidney Foundation2019

Association of Kidney Transplant Center Volume With 3-Year Clinical Outcomes.

Elizabeth M Sonnenberg, Jordana B Cohen, Jesse Y Hsu, Vishnu S Potluri, Matthew H Levine, Peter L Abt, Peter P Reese

Open access · greenAbstract readMulticenter Study
In one paragraph

Article in American journal of kidney diseases : the official journal of the National Kidney Foundation, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
1.9field-weighted citation impact, top 17% 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

14 citing papers in PubMed, 1 synthesis or guideline pooled it, 24 citations in OpenAlex.

  1. Pooled it
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  10. Simultaneous Heart-Kidney Transplant-Does Hospital Experience With Heart Transplant or Kidney Transplant Have a Greater Impact on Patient Outcomes?Transplant international : official journal of the European Society for Organ Transplantation · 2023
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 1 institution in 1 country.

Elizabeth M SonnenbergDepartment of Surgery, University of Pennsylvania, Philadelphia, PA; Leonard Davis Institute of Health Economics, University of Pennsylvania, Philadelphia, PA; National Clinician Scholars Program, University of Pennsylvania, Philadelphia, PA.
Jordana B CohenRenal-Electrolyte and Hypertension Division, University of Pennsylvania, Philadelphia, PA; Center for Clinical Epidemiology and Biostatistics, University of Pennsylvania, Philadelphia, PA.
Jesse Y HsuLeonard Davis Institute of Health Economics, University of Pennsylvania, Philadelphia, PA; Center for Clinical Epidemiology and Biostatistics, University of Pennsylvania, Philadelphia, PA.
Vishnu S PotluriLeonard Davis Institute of Health Economics, University of Pennsylvania, Philadelphia, PA; Renal-Electrolyte and Hypertension Division, University of Pennsylvania, Philadelphia, PA.
Matthew H LevineDepartment of Surgery, University of Pennsylvania, Philadelphia, PA.
Peter L AbtDepartment of Surgery, University of Pennsylvania, Philadelphia, PA.
Peter P ReeseLeonard Davis Institute of Health Economics, University of Pennsylvania, Philadelphia, PA; Renal-Electrolyte and Hypertension Division, University of Pennsylvania, Philadelphia, PA; Center for Clinical Epidemiology and Biostatistics, University of Pennsylvania, Philadelphia, PA. Electronic address: peter.reese@uphs.upenn.edu.
University of Pennsylvania · US

Funding

Training in Renal ResearchT32DK007006 · NIDDK · UNIVERSITY OF PENNSYLVANIA · PI HOLZMAN, LAWRENCE B. · 1986 to 2023
$8.5M
Management of hypertension in obesity: Antihypertensive class effects, blood pressure control, and renal and cardiac outcomesK23HL133843 · NHLBI · UNIVERSITY OF PENNSYLVANIA · PI COHEN, JORDANA B. · 2016 to 2020
$945k
NHLBI NIH HHS K23 HL133843NIDDK NIH HHS T32 DK007006
6 · The paper itself

Abstract

RATIONALE &

objectiveA robust relationship between procedure volume and clinical outcomes has been demonstrated across many surgical fields. This study assessed whether a center volume-outcome relationship exists for contemporary kidney transplantation, specifically for diabetic recipients, older recipients (aged ≥65 years), and recipients of high kidney donor profile index (KDPI ≥ 85) kidneys. STUDY

designRetrospective cohort study. SETTING &

participantsAdult kidney-only transplant recipients who underwent transplantation between 2009 and 2013 (N = 79,581). EXPOSURES: The primary exposure variable was center volume, categorized into quartiles based on the total kidney transplantation volume. Quartile 1 (Q1) centers performed a mean of fewer than 66 kidney transplantations per year, whereas Q4 centers performed a mean of more than 196 kidney transplantations per year. OUTCOMES: All-cause graft failure and mortality within 3 years of transplantation. ANALYTICAL APPROACH: Multivariable Cox frailty models were used to adjust for donor characteristics, recipient characteristics, and cold ischemia time.

resultsMinor differences in rates of 3-year deceased donor all-cause graft failure across quartiles of center volume were observed (14.9% for Q1 vs 16.7% for Q4), including in subgroups (diabetic recipients, 18.4% for Q1 vs 19.7% for Q4; older recipients, 19.4% for Q1 vs 22.5% for Q4; recipients of high KDPI kidneys, 26.5% for Q1 vs 26.5% for Q4). Results were similar for 3-year mortality. After adjustment for donor, recipient, and graft characteristics using Cox regression, center volume was not significantly associated with all-cause graft failure or mortality within 3 years, except that diabetic recipients at Q3 centers had slightly lower mortality (compared with Q1 centers, adjusted HR of 0.85 [95% CI, 0.73-0.99]). LIMITATIONS: Potential unmeasured confounding from patient comorbid conditions and organ selection.

conclusionsThese findings provide little evidence that care in higher volume centers is associated with better adjusted outcomes for kidney transplant recipients, even in populations anticipated to be at increased risk for graft failure or death.

Indexed as

Transplant RecipientsAgedCohort StudiesFemaleGraft RejectionHospitals, High-VolumeHospitals, Low-VolumeHumansKidney Failure, ChronicKidney TransplantationMaleMiddle AgedRetrospective StudiesTime FactorsTissue and Organ ProcurementTreatment Outcomediabetic transplant recipientsend-stage renal disease (ESRD)graft survivalKidney transplantolder transplant recipientsquality of carerecipients of high KDPI graftstransplant center volumetransplant outcomestransplant referral

Identifiers

PMID31076173
PMCPMC6756929
OpenAlexW2944211019

What OpenQuestion holds

Textmetadata
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.