Evidence map›Paper›PMID 26551977›Full record

Trial reportThe American journal of medicine2016

Assessing the Caprini Score for Risk Assessment of Venous Thromboembolism in Hospitalized Medical Patients.

Paul J Grant, M Todd Greene, Vineet Chopra, Steven J Bernstein, Timothy P Hofer, Scott A Flanders

Open access · bronzeAbstract readClinical Trial
In one paragraph

Trial report in The American journal of medicine, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 56 papers, 6 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
56citing papers in PubMed, 6 pooled it
4.1field-weighted citation impact, top 5% 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

56 citing papers in PubMed, 6 syntheses or guidelines pooled it, 127 citations in OpenAlex.

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  3. Systematic review of venous thromboembolism risk categories derived from Caprini score.Journal of vascular surgery. Venous and lymphatic disorders · 2022
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  8. Evolution of the Caprini risk assessment score: 1991 to present: A living risk assessment tool.Journal of vascular surgery. Venous and lymphatic disorders · 2026
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 1 country.

Paul J Grant *Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI.
M Todd Greene *Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI.
Vineet ChopraDepartment of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI.
Steven J BernsteinDepartment of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI.
Timothy P HoferDepartment of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI.
Scott A FlandersDepartment of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI.
University of Michigan–Ann Arbor · USVA Center for Clinical Management Research · US

Funding

Research BaseP30DK092926 · NIDDK · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI MARY ELLEN MICHELE HEISLER, ADESUWA B OLOMU · 2011 to 2026
$10.0M
Improving Peripherally Inserted Central Catheter Use in Hospitalized PatientsK08HS022835 · AHRQ · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI CHOPRA, VINEET · 2014 to 2017
$608k
AHRQ HHS K08 HS022835NIDDK NIH HHS P30 DK092926
6 · The paper itself

Abstract

backgroundThe optimal approach to assess risk of venous thromboembolism in hospitalized medical patients is unknown. We examined how well the Caprini risk assessment model predicts venous thromboembolism in hospitalized medical patients.

methodsBetween January 2011 and March 2014, venous thromboembolism events and risk factors were collected from non-intensive care unit medical patients hospitalized in facilities across Michigan. After calculation of the Caprini score for each patient, mixed logistic spline regression was used to determine the predicted probabilities of 90-day venous thromboembolism by receipt of pharmacologic prophylaxis across the Caprini risk continuum.

resultsA total of 670 (1.05%) of 63,548 eligible patients experienced a venous thromboembolism event within 90 days of hospital admission. The mean Caprini risk score was 4.94 (range, 0-28). Predictive modeling revealed a consistent linear increase in venous thromboembolism for Caprini scores between 1 and 10; estimates beyond a score of 10 were unstable. Receipt of pharmacologic prophylaxis resulted in a modest decrease in venous thromboembolism risk (odds ratio, 0.85; 95% confidence interval, 0.72-0.99; P = .04). However, the low overall incidence of venous thromboembolism led to large estimates of numbers needed to treat to prevent a single venous thromboembolism event. A Caprini cut-point demonstrating clear benefit of prophylaxis was not detected.

conclusionsAlthough a linear association between the Caprini risk assessment model and the risk of venous thromboembolism was noted, an extremely low incidence of venous thromboembolism events in non-intensive care unit medical patients was observed. The Caprini risk assessment model was unable to identify a subset of medical patients who benefit from pharmacologic prophylaxis.

Indexed as

Venous ThromboembolismAgedFemaleHumansInpatientsMaleMiddle AgedRisk AssessmentCaprini risk assessment modelDeep venous thrombosisPharmacologic prophylaxisPulmonary embolismVenous thromboembolism

Identifiers

PMID26551977
PMCPMC5331485
OpenAlexW2166345657

What OpenQuestion holds

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Registered trials

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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.