Evidence map›Paper›PMID 29733939›Full record

ArticleJournal of the American Academy of Dermatology2018

Ethnic differences and comorbidities of 909 prurigo nodularis patients.

Emily Boozalis, Olive Tang, Shivani Patel, Yevgeniy R Semenov, Manuel P Pereira, Sonja Stander, Sewon Kang, Shawn G Kwatra

Open access · greenAbstract read
In one paragraph

Article in Journal of the American Academy of Dermatology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 70 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
70citing papers in PubMed, 4 pooled it
15.7field-weighted citation impact, top 1% 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

70 citing papers in PubMed, 4 syntheses or guidelines pooled it, 178 citations in OpenAlex.

  1. IL31 identified as a key genetic risk factor for prurigo nodularis.The Journal of allergy and clinical immunology · 2025
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  15. Th2 mRNA gene expression analysis separates Prurigo nodularis into two immune signature groups.Journal of the European Academy of Dermatology and Venereology : JEADV · 2025
    Observational
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10 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 4 institutions in 2 countries.

Emily BoozalisDepartment of Dermatology, Johns Hopkins University School of Medicine, Baltimore, Maryland.
Olive TangDepartment of Dermatology, Johns Hopkins University School of Medicine, Baltimore, Maryland; Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland.
Shivani PatelDepartment of Dermatology, Johns Hopkins University School of Medicine, Baltimore, Maryland.
Yevgeniy R SemenovDivision of Dermatology, Washington University School of Medicine, St. Louis, Missouri.
Manuel P PereiraCenter for Chronic Pruritus, Department of Dermatology, University Hospital Münster, Münster, Germany.
Sonja StanderCenter for Chronic Pruritus, Department of Dermatology, University Hospital Münster, Münster, Germany.
Sewon KangDepartment of Dermatology, Johns Hopkins University School of Medicine, Baltimore, Maryland.
Shawn G KwatraDepartment of Dermatology, Johns Hopkins University School of Medicine, Baltimore, Maryland; Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland. Electronic address: skwatra1@jhmi.edu.
Johns Hopkins Medicine · USUniversity Hospital Münster · DEJohns Hopkins University · USWashington University in St. Louis · US

Funding

MEDICAL SCIENTIST TRAINING PROGRAMT32GM007309 · NIGMS · JOHNS HOPKINS UNIVERSITY · PI COX, ANDREA L · 1985 to 2019
$43.2M
Racial disparities in diabetes- and prediabetes-associated outcomes in older adultsF30DK120160 · NIDDK · JOHNS HOPKINS UNIVERSITY · PI TANG, OLIVE · 2018 to 2020
$145k
NIDDK NIH HHS F30 DK120160NIGMS NIH HHS T32 GM007309
6 · The paper itself

Abstract

backgroundPrurigo nodularis (PN) is a poorly understood, understudied pruritic dermatosis that reduces quality of life.

objectiveTo characterize the demographics and comorbidities associated with PN.

methodsCross-sectional study of patients 18 years and older who were seen at the Johns Hopkins Health System between December 6, 2012, and December 6, 2017.

resultsOver the past 5 years, 909 patients with PN were seen at Johns Hopkins Health System. African American patients were 3.4 times more likely to have PN than white patients were (odds ratio [OR], 3.4; 95% confidence interval [CI], 2.9-3.9; P < .001). A comparison of the study patients and race-matched controls revealed that PN was significantly associated with a variety of systemic, cardiovascular, and psychiatric comorbidities, including chronic kidney disease, chronic hepatitis C, chronic obstructive pulmonary disease, congestive heart failure, depression, and atopic dermatitis. Black patients with PN were 10.5 times more likely (OR, 10.5; 95% CI, 7.9-13.9; P < .001) to have HIV than were race-matched controls with atopic dermatitis, and 8 times more likely (OR, 8.0; 95% CI, 5.7-11.1; P < .001) to have HIV than were African American patients with psoriasis. LIMITATIONS: Our data describe patients seen by 1 hospital system. Our data identify associated conditions and comorbidities but are unable to support a causal relationship.

conclusionPN disproportionately affects African Americans and is associated with several systemic conditions, including HIV, chronic kidney disease, and diabetes.

Indexed as

ComorbidityAcademic Medical CentersAdultAgedAge FactorsBaltimoreBlack or African AmericanConfidence IntervalsCross-Sectional StudiesEthnicityFemaleHumansMaleMiddle AgedOdds RatioPrevalenceatopic dermatitischronic kidney diseaseHIVitchPNprurigo nodularisprurituspsoriasis

Identifiers

PMID29733939
PMCPMC6518410
OpenAlexW2801642492

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.