Evidence map›Paper›PMID 21509604›Full record

ArticleJournal of general internal medicine2011

Racial disparity in blood pressure: is vitamin D a factor?

Kevin Fiscella, Paul Winters, Dan Tancredi, Peter Franks

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in Journal of general internal medicine, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
2.2field-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

16 citing papers in PubMed, 1 synthesis or guideline pooled it, 28 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Vitamin D and risk of hypertension among Black women.Journal of clinical hypertension (Greenwich, Conn.) · 2023
    Article
  4. Article
  5. Pregnancy as a Window to Racial Disparities in Hypertension.Journal of women's health (2002) · 2019
    Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Serum vitamin D is low and inversely associated with LDL cholesterol in the Kazak ethnic population: a cross-sectional study.Medical science monitor : international medical journal of experimental and clinical research · 2014
    Article
  11. Review
  12. Review
  13. Relationship of vitamin D levels to blood pressure in a biethnic population.Nutrition, metabolism, and cardiovascular diseases : NMCD · 2013
    Article
  14. Article
  15. Article
  16. Vitamin D as a mediator of racial differences in blood pressure.Journal of general internal medicine · 2011
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors at 2 institutions in 1 country.

Kevin FiscellaDepartment of Family Medicine, University of Rochester School of Medicine, Rochester, NY 14620, USA. Kevin_Fiscella@URMC.rochester.edu
Paul Winters
Dan Tancredi
Peter Franks
Center For Policy Research · USUniversity of Rochester · US

Funding

Using Social Risk to Guide Coronary Heart Disease (CHD) Preventive TreatmentR01HL081066 · NHLBI · UNIVERSITY OF ROCHESTER · PI FISCELLA, KEVIN ANTHONY · 2007 to 2009
$820k
NHLBI NIH HHS 1R01HL081066-01A2NHLBI NIH HHS R01 HL081066
6 · The paper itself

Abstract

backgroundHigher prevalence of hypertension among African Americans is a key cause of racial disparity in cardiovascular morbidity and mortality. Explanations for the difference in prevalence are incomplete. Emerging data suggest that low vitamin D levels may contribute.

objectiveTo assess the contribution of vitamin D to racial disparity in blood pressure.

designCross-sectional analysis.

participantsAdult non-Hispanic Black and White participants from the National Health and Nutrition Examination Survey 2001-2006. MEASURES: We assessed Black-White differences in systolic blood pressure (SBP) controlling for conventional risk factors, and then additionally, for vitamin D (serum 25[OH]D).

resultsThe sample included 1984 and 5156 Black and White participants ages 20 years and older. The mean age-sex adjusted Black-White SBP difference was 5.2 mm Hg. This difference was reduced to 4.0 mm Hg with additional adjustment for socio-demographic characteristics, health status, health care, health behaviors, and biomarkers; adding 25(OH)D reduced the race difference by 26% (95% CI 7-46%) to 2.9 mm Hg. This effect increased to 39% (95% CI 14-65%) when those on antihypertensive medications were excluded. Supplementary analyses that controlled for cardiovascular fitness, percent body fat, physical activity monitoring, skin type and social support yielded consistent results.

conclusionIn cross-sectional analyses, 25(OH)D explains one quarter of the Black-White disparity in SBP. Randomized controlled trials are required to determine whether vitamin D supplementation could reduce racial disparity in BP.

Indexed as

Black PeopleWhite PeopleAdultBlack or African AmericanBlood PressureCross-Sectional StudiesFemaleHumansMaleMiddle AgedRacial GroupsVitamin DVitamin D DeficiencyVitamin D

Identifiers

PMID21509604
PMCPMC3181312
OpenAlexW2169063495

What OpenQuestion holds

Textmetadata
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.