Evidence map›Paper›PMID 28899480›Full record

ArticleClinical nephrology2017

Variability in hemoglobin levels in hemodialysis patients in the current era: a retrospective cohort study.

David T Gilbertson, Yan Hu, Yi Peng, Bradley J Maroni, James B Wetmore

Abstract read
In one paragraph

Article in Clinical nephrology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
–field-weighted citation impact
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

10 citing papers in PubMed.

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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

5 authors.

David T Gilbertson
Yan Hu
Yi Peng
Bradley J Maroni
James B Wetmore

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundGiven regulatory and reimbursement changes in anemia management, we examined hemoglobin variability in a contemporary cohort of maintenance hemodialysis patients. MATERIALS AND

methodsThe study population included > 200,000 hemodialysis patients with Medicare parts A and B as primary payer on October 1, 2012. Based on 25th and 75th percentiles, monthly hemoglobin values were categorized as low, intermediate, or high. Six variability categories were created by patterns during the 6-month observation period. Stable categories were: always-low, alwaysintermediate, always-high; variable patterns were: varying between low and intermediate, intermediate and high, low and high (mostvariable). Cox proportional hazard models were used to assess the association between hemoglobin variability and all-cause mortality or major adverse cardiac events (MACE).

resultsThe 25

conclusionsIn 2012 vs. 2004, hemoglobin levels decreased, the range of levels narrowed, and variability decreased modestly; transfusions increased. The highest risk of mortality and MACE appeared to occur in patients with persistently low, rather than highly variable, hemoglobin levels.

Indexed as

Renal DialysisAgedBlood TransfusionFemaleHemoglobinsHumansMaleMiddle AgedProportional Hazards ModelsRetrospective StudiesHemoglobins

Identifiers

PMID28899480
PMCPMC5653974

What OpenQuestion holds

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Registered trials

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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.