Evidence map›Paper›PMID 40080116›Full record

ArticleIntensive care medicine2025

A common longitudinal intensive care unit data format (CLIF) for critical illness research.

Juan C Rojas, Patrick G Lyons, Kaveri Chhikara, Vaishvik Chaudhari, Sivasubramanium V Bhavani, Muna Nour, Kevin G Buell, Kevin D Smith, Catherine A Gao, Saki Amagai and 18 more

Erratum issuedAbstract read
In one paragraph

Article in Intensive care medicine, 2025. 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 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing 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

19 citing papers in PubMed.

  1. Article
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  4. The future of heart transplant data science requires common data models.The Journal of heart and lung transplantation : the official publication of the International Society for Heart Transplantation · 2026
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  8. Observational
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  10. Review
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  13. Modernizing the national transplant database.American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons · 2025
    Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

28 authors.

Juan C Rojas *Division of Pulmonology, Critical Care, and Sleep Medicine, Rush University, Chicago, IL, USA.
Patrick G Lyons *Department of Medicine, Oregon Health and Science University, Portland, OR, USA.
Kaveri ChhikaraDepartment of Medicine, University of Chicago, Chicago, IL, USA.
Vaishvik ChaudhariDivision of Pulmonology, Critical Care, and Sleep Medicine, Rush University, Chicago, IL, USA.
Sivasubramanium V BhavaniDepartment of Medicine, Emory University, Atlanta, GA, USA.
Muna NourDepartment of Medicine, Emory University, Atlanta, GA, USA.
Kevin G BuellDepartment of Medicine, University of Chicago, Chicago, IL, USA.
Kevin D SmithDepartment of Medicine, University of Chicago, Chicago, IL, USA.
Catherine A GaoDivision of Pulmonary and Critical Care, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.
Saki AmagaiDivision of Health and Biomedical Informatics, Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.
Chengsheng MaoDivision of Health and Biomedical Informatics, Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.
Yuan LuoDivision of Health and Biomedical Informatics, Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.
Anna K BarkerDivision of Pulmonary and Critical Care, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA.
Mark NuppnauDivision of Pulmonary and Critical Care, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA.
Michael HermsenDepartment of Medicine, School of Medicine and Public Health, University of Wisconsin, Madison, WI, USA.
Jay L KoynerDepartment of Medicine, University of Chicago, Chicago, IL, USA.
Haley BeckMacLean Center for Clinical Medical Ethics, University of Chicago Medicine, Chicago, IL, USA.
Rachel BaccileDepartment of Medicine, University of Chicago, Chicago, IL, USA.
Zewei LiaoHarris School of Public Policy, University of Chicago, Chicago, IL, USA.
Kyle A CareyDepartment of Medicine, University of Chicago, Chicago, IL, USA.
Brenna Park-EganDepartment of Medicine, Oregon Health and Science University, Portland, OR, USA.
Xuan HanDivision of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, Tufts University School of Medicine, Boston, MA, USA.
Alexander C OrtizDivision of Pulmonary, Allergy, and Critical Care, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
Benjamin E SchmidPalliative and Advanced Illness Research (PAIR) Center, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA.
Gary E WeissmanPalliative and Advanced Illness Research (PAIR) Center, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA.
Chad H HochbergDivision of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University, Baltimore, MD, USA.
Nicholas E IngrahamDivision of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, University of Minnesota Medical School, University of Minnesota, Minneapolis, MN, USA.
William F ParkerDepartment of Medicine, University of Chicago, Chicago, IL, USA. wparker@uchicago.edu.ORCID 0000-0002-6000-3153

Funding

Technology CoreU19AI135964 · NIAID · NORTHWESTERN UNIVERSITY AT CHICAGO · PI RICHARD G WUNDERINK · 2018 to 2026
$24.7M
RESEARCH TRAINING IN RESPIRATORY BIOLOGYT32HL007605 · NHLBI · UNIVERSITY OF CHICAGO · PI Yun Fang, Gokhan M. Mutlu · 1985 to 2026
$18.1M
Cardiology & pulmonary research training grantT32HL007891 · NHLBI · UNIVERSITY OF PENNSYLVANIA · PI Jason D Christie · 1998 to 2026
$12.0M
CRITICAL: Collaborative Resource for Intensive care Translational science, Informatics, Comprehensive Analytics, and LearningU01TR003528 · NCATS · NORTHWESTERN UNIVERSITY AT CHICAGO · PI CIMINO, JAMES J, LUO, YUAN · 2021 to 2024
$4.9M
Data Driven Strategies for Substance Misuse Identification in Hospitalized PatientsR01DA051464 · NIDA · UNIVERSITY OF WISCONSIN-MADISON · PI Majid Afshar · 2020 to 2026
$4.5M
Using Machine Learning for Early Recognition and Personalized Treatment of Acute Kidney InjuryR01DK126933 · NIDDK · UNIVERSITY OF CHICAGO · PI CHURPEK, MATTHEW MICHAEL, KOYNER, JAY L · 2021 to 2025
$3.4M
Improving the efficiency and equity of critical care allocation during a crisis with place-based disadvantage indicesR01LM014263 · NLM · UNIVERSITY OF CHICAGO · PI William F Parker · 2023 to 2026
$2.0M
Modeling the Incompleteness and Biases of Health DataR01LM013337 · NLM · NORTHWESTERN UNIVERSITY AT CHICAGO · PI LUO, YUAN · 2020 to 2023
$1.3M
Improving sepsis care with AI-based clinical decision supportR35GM155262 · NIGMS · UNIVERSITY OF PENNSYLVANIA · PI Gary Weissman · 2024 to 2026
$1.2M
Identification of Precision Sepsis Subphenotypes Using Vital Sign TrajectoriesK23GM144867 · NIGMS · EMORY UNIVERSITY · PI BHAVANI, SIVASUBRAMANIUM · 2021 to 2025
$890k
SPOT-IT: Sepsis Prediction in Oncology Through Implementation Science and TechnologyK08CA270383 · NCI · OREGON HEALTH & SCIENCE UNIVERSITY · PI Patrick G Lyons · 2024 to 2026
$851k
Sustainable Implementation of Prone Positioning for the Acute Respiratory Distress SyndromeK23HL169743 · NHLBI · JOHNS HOPKINS UNIVERSITY · PI Chad Hochberg · 2023 to 2026
$716k
NCATS NIH HHS U01 TR003528NCI NIH HHS K08 CA270383NHLBI NIH HHS K08 HL150291NHLBI NIH HHS K23 HL166783NHLBI NIH HHS K23 HL169743NHLBI NIH HHS K23 HL169815NHLBI NIH HHS T32 HL007605NHLBI NIH HHS T32 HL007891NIAID NIH HHS U19 AI135964NIDA NIH HHS R01 DA051464NIDDK NIH HHS R01 DK126933NIGMS NIH HHS K23 GM144867NIGMS NIH HHS R35 GM155262NLM NIH HHS R01 LM013337NLM NIH HHS R01 LM014263U.S. National Library of Medicine R01LM014263
6 · The paper itself

Abstract

rationaleCritical illness threatens millions of lives annually. Electronic health record (EHR) data are a source of granular information that could generate crucial insights into the nature and optimal treatment of critical illness.

objectivesOvercome the data management, security, and standardization barriers to large-scale critical illness EHR studies.

methodsWe developed a Common Longitudinal Intensive Care Unit (ICU) data Format (CLIF), an open-source database format to harmonize EHR data necessary to study critical illness. We conducted proof-of-concept studies with a federated research architecture: (1) an external validation of an in-hospital mortality prediction model for critically ill patients and (2) an assessment of 72-h temperature trajectories and their association with mechanical ventilation and in-hospital mortality using group-based trajectory models. MEASUREMENTS AND MAIN

resultsWe converted longitudinal data from 111,440 critically ill patient admissions from 2020 to 2021 (mean age 60.7 years [standard deviation 17.1], 28% Black, 7% Hispanic, 44% female) across 9 health systems and 39 hospitals into CLIF databases. The in-hospital mortality prediction model had varying performance across CLIF consortium sites (AUCs: 0.73-0.81, Brier scores: 0.06-0.10) with degradation in performance relative to the derivation site. Temperature trajectories were similar across health systems. Hypothermic and hyperthermic-slow-resolver patients consistently had the highest mortality.

conclusionsCLIF enables transparent, efficient, and reproducible critical care research across diverse health systems. Our federated case studies showcase CLIF's potential for disease sub-phenotyping and clinical decision-support evaluation. Future applications include pragmatic EHR-based trials, target trial emulations, foundational artificial intelligence (AI) models of critical illness, and real-time critical care quality dashboards.

Indexed as

Critical IllnessElectronic Health RecordsIntensive Care UnitsAdultAgedDatabases, FactualFemaleHospital MortalityHumansLongitudinal StudiesMaleMiddle AgedCritical care dataMachine learningTemperature trajectory modeling

Identifiers

PMID40080116
PMCPMC12167506

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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.