Evidence map›Paper›PMID 33149635›Full record

ArticleClinicoEconomics and outcomes research : CEOR2020

Development of a Severity Classification System for Sickle Cell Disease.

Nirmish Shah, David Beenhouwer, Michael S Broder, Lanetta Bronte-Hall, Laura M De Castro, Sarah N Gibbs, Victor R Gordeuk, Julie Kanter, Elizabeth S Klings, Thokozeni Lipato and 4 more

Open access · goldAbstract read
In one paragraph

Article in ClinicoEconomics and outcomes research : CEOR, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 3 pooled it
2.3field-weighted citation impact, top 11% 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

25 citing papers in PubMed, 3 syntheses or guidelines pooled it, 41 citations in OpenAlex.

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  13. Optimizing the "right" patient selection for treatment for sickle cell disease.Hematology. American Society of Hematology. Education Program · 2025
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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

14 authors at 10 institutions in 1 country.

Nirmish ShahDepartment of Medicine, Duke University, Durham, NC, USA.ORCID 0000-0002-7506-0935
David BeenhouwerPartnership for Health Analytic Research (PHAR), LLC, Beverly Hills, CA, USA.
Michael S BroderPartnership for Health Analytic Research (PHAR), LLC, Beverly Hills, CA, USA.ORCID 0000-0002-2049-5536
Lanetta Bronte-HallFoundation for Sickle Cell Disease Research, Hollywood, FL, USA.ORCID 0000-0002-8382-2848
Laura M De CastroDepartment of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA, USA.
Sarah N GibbsPartnership for Health Analytic Research (PHAR), LLC, Beverly Hills, CA, USA.ORCID 0000-0002-1215-642X
Victor R GordeukDepartment of Medicine, University of Illinois at Chicago, Chicago, IL, USA.
Julie KanterDepartment of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA.
Elizabeth S KlingsDepartment of Medicine, Boston University School of Medicine, Boston, MA, USA.
Thokozeni LipatoDepartment of Internal Medicine, Virginia Commonwealth University, Richmond, VA, USA.
Deepa ManwaniDepartment of Pediatrics, Albert Einstein College of Medicine, Bronx, NY, USA.
Brigid ScullinDepartment of Medicine, University of North Carolina, Chapel Hill, NC, USA.ORCID 0000-0002-9542-8303
Irina YermilovPartnership for Health Analytic Research (PHAR), LLC, Beverly Hills, CA, USA.ORCID 0000-0001-6035-2815
Wally R SmithDepartment of Internal Medicine, Virginia Commonwealth University, Richmond, VA, USA.
Partnership for Health Analytic Research · USVirginia Commonwealth University · USAlbert Einstein College of Medicine · USBoston University · USDuke University · USInstitute for Myeloma & Bone Cancer Research · USUniversity of Alabama at Birmingham · USUniversity of Illinois Chicago · USUniversity of North Carolina at Chapel Hill · USUniversity of Pittsburgh Medical Center · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThere is no well-accepted classification system of overall sickle cell disease (SCD) severity. We sought to develop a system that could be tested as a clinical outcome predictor. PATIENTS AND

methodsUsing validated methodology (RAND/UCLA modified Delphi panel), 10 multi-disciplinary expert clinicians collaboratively developed 180 simplified patient histories and rated each on multiple axes (estimated clinician follow-up frequency, risk of complications or death, quality of life, overall disease severity). Using ratings on overall disease severity, we developed a 3-level severity classification system ranging from Class I (least severe) to Class III (most severe).

resultsThe system defines patients as Class I who are 8-40 years with no end organ damage, no chronic pain, and ≤4 unscheduled acute care visits due to vaso-occlusive crises (VOC) in the last year. Patients <8 or >40 years with no end organ damage, no chronic pain, and <2 unscheduled acute care visits are also considered Class I. Patients any age with ≥5 unscheduled acute care visits and/or with severe damage to bone, retina, heart, lung, kidney, or brain are classified as Class III (except patients ≥25 years with severe retinopathy, no chronic pain, and 0-1 unscheduled acute care visits, who are considered Class II). Patients not meeting these Class I or III definitions are classified as Class II.

conclusionThis system consolidates patient characteristics into homogenous groups with respect to disease state to support clinical decision-making. The system is consistent with existing literature that increased unscheduled acute care visits and organ damage translate into clinically significant patient morbidity. Studies to further validate this system are planned.

Indexed as

chronic paindisease severityexpert panelorgan damagevaso-occlusive crises

Identifiers

PMID33149635
PMCPMC7604906
OpenAlexW3096026091

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.