Evidence map›Paper›PMID 22219175›Full record

ArticleInternational urology and nephrology2012

Racial differences in restless legs symptoms and serum ferritin in an incident dialysis patient cohort.

Nancy G Kutner, Rebecca Zhang, Yijian Huang, Donald L Bliwise

Abstract readComparative StudyMulticenter Study
PubMed Publisher
In one paragraph

Article in International urology and nephrology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed, 1 pooled it
1.4field-weighted citation impact, top 18% 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

7 citing papers in PubMed, 1 synthesis or guideline pooled it, 20 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Nighttime Agitation in Persons with Dementia as a Manifestation of Restless Legs Syndrome.Journal of the American Medical Directors Association · 2021
    Observational
  6. Review
  7. 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

4 authors at 1 institution in 1 country.

Nancy G KutnerDepartment of Rehabilitation Medicine, School of Medicine, Emory University, CRM-1441 Clifton Rd. N.E., Atlanta, GA 30322, USA. nkutner@emory.edu
Rebecca Zhang
Yijian Huang
Donald L Bliwise
Emory University · US

Funding

GENDER, RACE, AGE AND SURVIVAL ON CHRONIC DIALYSISR01DK042949 · NIDDK · EMORY UNIVERSITY · PI KUTNER, NANCY G · 1990 to 1998
–
NIDDK NIH HHS DK42949
6 · The paper itself

Abstract

purposeRestless legs syndrome (RLS), a debilitating sleep disorder that is frequently reported by CKD patients on dialysis, may be more common in whites than in non-whites. Iron deficiency is associated with RLS, and serum ferritin is higher among African Americans compared to Caucasians in the general population. No prior studies have compared restless legs symptoms and serum ferritin levels of African-American and those of the Caucasian patients on dialysis.

methodsIn a multicenter observational study that included in-person interviews and medical chart review, we studied 210 patients who had recently started renal dialysis. Predictors of restless legs symptoms were examined in a multivariable logistic regression model.

resultsAfrican Americans had a reduced risk of restless legs complaint compared to Caucasian patients (OR, 0.44 [95% CI 0.21-0.93]; P=0.03). African-American patients were also less likely than Caucasian patients to have low serum ferritin values (<100 ng/ml), and among patients with serum ferritin≥100 ng/ml, the average serum ferritin of African-American patients was higher than that of Caucasian patients.

conclusionsFurther study of racial and iron status relationships could advance the understanding of RLS pathophysiology, and RLS is an important patient outcome to monitor, as revised anemia and iron protocols are implemented in the clinical setting.

Indexed as

Black or African AmericanRenal DialysisWhite PeopleFemaleFerritinsHumansMaleMiddle AgedProspective StudiesRestless Legs SyndromeFerritins

Identifiers

PMID22219175
OpenAlexW2100685733

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.