Evidence map›Paper›PMID 19118116›Full record

ArticleClinical journal of the American Society of Nephrology : CJASN2009

Association of markers of iron stores with outcomes in patients with nondialysis-dependent chronic kidney disease.

Csaba P Kovesdy, Wilber Estrada, Shahram Ahmadzadeh, Kamyar Kalantar-Zadeh

Abstract read
In one paragraph

Article in Clinical journal of the American Society of Nephrology : CJASN, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
2.0field-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

22 citing papers in PubMed, 57 citations in OpenAlex.

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  16. Lipids, blood pressure and kidney update 2015.Lipids in health and disease · 2015
    Review
  17. Observational
  18. Article
  19. Article
  20. Correction of iron deficiency in the cardiorenal syndrome.International journal of nephrology · 2011
    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 3 institutions in 1 country.

Csaba P KovesdyDivision of Nephrology, Salem Veteran Affairs Medical Center, 1970 Roanoke Boulevard, Salem, VA 24153, USA. csaba.kovesdy@va.gov
Wilber Estrada
Shahram Ahmadzadeh
Kamyar Kalantar-Zadeh
University of Virginia · USSalem VA Medical Center · USUniversity of California, Los Angeles · US

Funding

Examining Racial and Cardiovascular Paradoxes in Chronic Kidney DiseaseR01DK078106 · NIDDK · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI KALANTAR-ZADEH, KAMYAR · 2007 to 2011
$1.1M
NIDDK NIH HHS 1R01DK078106-01NIDDK NIH HHS R01 DK078106
6 · The paper itself

Abstract

BACKGROUND AND

objectivesAssessments of iron stores by serum iron saturation ratio (ISAT) and ferritin are used to direct anemia therapy in chronic kidney disease (CKD) and are associated with clinical outcomes in patients on dialysis. The association of ISAT and ferritin with outcomes in patients with nondialysis-dependent CKD (NDD-CKD) has not been studied. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: All-cause mortality and progression of CKD [slopes of estimated GFR (eGFR)] were examined in 453 men with NDD-CKD. Mortality and the composite of mortality and ESRD were studied in Cox models. Slopes of eGFR were examined in mixed-effects models.

resultsLower ISAT was associated with higher mortality; adjusted hazard ratio [95% confidence interval (CI)] with ISAT of <12%, 13 to 17%, and >23% versus 18 to 23%; 1.40 (0.99 to 1.98), 1.20 (0.82 to 1.76), and 0.97 (0.67 to 1.41), P = 0.025 for trend. ISAT was also associated with steeper slopes of eGFR (one log-unit higher ISAT associated with a slope of -0.89 ml/min/1.73 m(2) /yr (95% CI: -1.75, -0.02, P = 0.044). Serum ferritin level showed no significant association with outcomes overall, but a trend for higher mortality was observed in patients with a serum ferritin level >250 ng/ml.

conclusionsHigher ISAT is associated with lower mortality and with more progressive CKD. Clinical trials are needed to examine if correction of low iron levels can improve mortality without affecting kidney function in NDD-CKD.

Indexed as

AgedAnemia, Iron-DeficiencyBiomarkersChronic DiseaseDisease ProgressionFerritinsHumansIronIron DeficienciesKidney DiseasesKidney Failure, ChronicMaleMiddle AgedPrognosisProportional Hazards ModelsRisk AssessmentBiomarkersFerritinsIron

Identifiers

PMID19118116
PMCPMC2637589
OpenAlexW2127029512

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.