Evidence map›Paper›PMID 31520899›Full record

Observational studyAmerican heart journal2019

C-reactive protein and stroke risk in blacks and whites: The REasons for Geographic And Racial Differences in Stroke cohort.

Christina R Evans, D Leann Long, George Howard, Leslie A McClure, Neil A Zakai, Nancy S Jenny, Brett M Kissela, Monika M Safford, Virginia J Howard, Mary Cushman

Open access · greenAbstract readObservational Study
In one paragraph

Observational study in American heart journal, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
2.1field-weighted citation impact, top 13% 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

12 citing papers in PubMed, 1 synthesis or guideline pooled it, 19 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. RACIAL DISPARITIES IN STROKE AFFECTING BLACK AMERICANS.Transactions of the American Clinical and Climatological Association · 2025
    Article
  4. Review
  5. Article
  6. Review
  7. Article
  8. Observational
  9. Review
  10. Article
  11. Glucocorticoid receptor sensitivity in early pregnancy in an African American cohort.American journal of reproductive immunology (New York, N.Y. : 1989) · 2020
    Article
  12. Article
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

10 authors at 5 institutions in 1 country.

Christina R EvansLarner College of Medicine at the University of Vermont, Burlington, VT, USA.
D Leann LongUniversity of Alabama at Birmingham School of Public Health, Birmingham, AL, USA.
George HowardUniversity of Alabama at Birmingham School of Public Health, Birmingham, AL, USA.
Leslie A McClureDrexel University School of Public Health, Philadelphia, PA, USA.
Neil A ZakaiLarner College of Medicine at the University of Vermont, Burlington, VT, USA.
Nancy S JennyLarner College of Medicine at the University of Vermont, Burlington, VT, USA.
Brett M KisselaUniversity of Cincinnati School of Medicine, Cincinnati, OH, USA.
Monika M SaffordWeill Cornell Medical College, New York, NY, USA.
Virginia J HowardUniversity of Alabama at Birmingham School of Public Health, Birmingham, AL, USA.
Mary CushmanLarner College of Medicine at the University of Vermont, Burlington, VT, USA. Electronic address: mary.cushman@uvm.edu.
University of Vermont · USUniversity of Alabama at Birmingham · USCornell University · USDrexel University · USUniversity of Cincinnati · US

Funding

VCID and Stroke in a Bi-racial National CohortU01NS041588 · NINDS · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI CUSHMAN, MARY, HOWARD, GEORGE · 2002 to 2022
$96.0M
University of Alabama at Birmingham's Diabetes Research CenterP30DK079626 · NIDDK · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI Kirk Michael Habegger · 2013 to 2026
$19.5M
NIDDK NIH HHS P30 DK079626NINDS NIH HHS U01 NS041588
6 · The paper itself

Abstract

backgroundC-reactive protein (CRP) is an inflammatory biomarker used in vascular risk prediction, though with less data in people of color. Blacks have higher stroke incidence and also higher CRP than whites. We studied the association of CRP with ischemic stroke risk in blacks and whites.

methodsREGARDS, an observational cohort study, recruited and followed 30,239 black and white Americans 45 years and older for ischemic stroke. We calculated hazard ratios and 95% CIs of ischemic stroke by CRP category (<1, 1-3, 3-10, and ≥10 mg/L) adjusted for age, sex and stroke risk factors.

resultsThere were 292 incident ischemic strokes among blacks and 439 in whites over 6.9 years of follow-up. In whites, the risk was elevated for CRP in the range from 3 to 10 mg/L and even higher for CRP >10 mg/L, whereas in blacks, an association was only seen for CRP >10 mg/L. Considered as a continuous variable, the risk factor-adjusted hazard ratios per SD higher lnCRP were 1.18 (95% CI 1.09-1.28) overall, 1.14 (95% CI 1.00-1.29) in blacks, and 1.22 (95% CI 1.10-1.35) in whites. Spline regression analysis visually confirmed the race difference in the association.

conclusionsCRP may not be equally useful in stroke risk assessment in blacks and whites. Confirmation, similar study for coronary heart disease, and identification of reasons for these racial differences require further study.

Indexed as

AgedBiomarkersBlack PeopleC-Reactive ProteinFemaleHumansIncidenceLongitudinal StudiesMaleMiddle AgedRisk AssessmentRisk FactorsStrokeWhite PeopleBiomarkersC-Reactive Protein

Identifiers

PMID31520899
PMCPMC6861684
OpenAlexW2967573042

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.