Evidence map›Paper›PMID 36030838›Full record

ArticleChest2023

Refining the Lung Allocation Score Models Fails to Improve Discrimination Performance.

Jarrod E Dalton, Carli J Lehr, Paul R Gunsalus, Lyla Mourany, Maryam Valapour

Abstract read
In one paragraph

Article in Chest, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
–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

16 citing papers in PubMed.

  1. Review
  2. XGBoost Outperforms Traditional Transplant Regulatory Models Based on Regression.Annals of surgery open : perspectives of surgical history, education, and clinical approaches · 2026
    Article
  3. Influence of U.S. lung composite allocation score components on transplant candidate prioritization.The Journal of heart and lung transplantation : the official publication of the International Society for Heart Transplantation · 2026
    Article
  4. Review
  5. Review
  6. Article
  7. Article
  8. Understanding Machine Learning Applications in Lung Transplantation: A Narrative Review.Transplant international : official journal of the European Society for Organ Transplantation · 2025
    Review
  9. Review
  10. Scoring donor lungs for graft failure risk: The Lung Donor Risk Index (LDRI).American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons · 2024
    Article
  11. A Hospitable Home? Cell-Free DNA and the Inflammatory Milieu in Lung Transplant Candidates.American journal of respiratory and critical care medicine · 2024
    Article
  12. Article
  13. Article
  14. A new method for classifying prognostic risk factors in lung transplant candidates.The Journal of heart and lung transplantation : the official publication of the International Society for Heart Transplantation · 2023
    Article
  15. Transplanting candidates with stacked risks negatively affects outcomes.The Journal of heart and lung transplantation : the official publication of the International Society for Heart Transplantation · 2023
    Article
  16. Miscalibration of lung allocation models leads to inaccurate waitlist mortality predictions.American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons · 2023
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors.

Jarrod E DaltonDepartment of Quantitative Health Sciences, Cleveland Clinic, Cleveland, OH.
Carli J LehrDepartment of Pulmonary Medicine, Cleveland Clinic, Cleveland, OH.
Paul R GunsalusDepartment of Quantitative Health Sciences, Cleveland Clinic, Cleveland, OH.
Lyla MouranyDepartment of Quantitative Health Sciences, Cleveland Clinic, Cleveland, OH.
Maryam ValapourDepartment of Pulmonary Medicine, Cleveland Clinic, Cleveland, OH. Electronic address: valapom@ccf.org.

Funding

Optimizing Lung Transplant Benefit Using Agent-Based Simulation Modeling ApproachesR01HL153175 · NHLBI · CLEVELAND CLINIC LERNER COM-CWRU · PI JARROD DALTON, JOHNIE ROSE · 2020 to 2026
$4.4M
Developing a Donor-Candidate Risk Prediction System to Optimize Lung Allocation and Transplant OutcomesK08HL159236 · NHLBI · CLEVELAND CLINIC LERNER COM-CWRU · PI CARLI JESSICA LEHR · 2022 to 2026
$749k
NHLBI NIH HHS K08 HL159236NHLBI NIH HHS R01 HL153175
6 · The paper itself

Abstract

backgroundAs broader geographic sharing is implemented in lung transplant allocation through the Composite Allocation Score (CAS) system, models predicting waitlist and posttransplant (PT) survival will become more important in determining access to organs. RESEARCH QUESTION: How well do CAS survival models perform, and can discrimination performance be improved with alternative statistical models or machine learning approaches? STUDY DESIGN AND

methodsScientific Registry for Transplant Recipients (SRTR) data from 2015-2020 were used to build seven waitlist (WL) and data from 2010-2020 to build similar PT models. These included the (I) current lung allocation score (LAS)/CAS model; (II) re-estimated WL-LAS/CAS model; (III) model II incorporating nonlinear relationships; (IV) random survival forests model; (V) logistic model; (VI) linear discriminant analysis; and (VII) gradient-boosted tree model. Discrimination performance was evaluated at 1, 3, and 6 months on the waiting list and 1, 3, and 5 years PT. Area under the curve (AUC) values were estimated across subgroups.

resultsWL model performance was similar across models with the greatest discrimination in the baseline cohort (AUC 0.93) and declined to 0.87-0.89 for 3-month and 0.84-0.85 for 6-month predictions and further diminished for residual cohorts. Discrimination performance for PT models ranged from AUC 0.58-0.61 and remained stable with increasing forecasting times but was slightly worse for residual cohorts. WL and PT variability in AUC was greatest for individuals with Medicaid insurance.

interpretationUse of alternative modeling strategies and contemporary cohorts did not improve performance of models determining access to lung transplant.

Indexed as

Lung TransplantationTissue and Organ ProcurementHumansLungModels, StatisticalRetrospective StudiesUnited StatesWaiting Lists

Identifiers

PMID36030838
PMCPMC9899637

What OpenQuestion holds

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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.