Evidence map›Paper›PMID 29499884›Full record

ReviewAdvances in chronic kidney disease2018

Kidney Function in Obesity-Challenges in Indexing and Estimation.

Alex R Chang, Waleed Zafar, Morgan E Grams

Abstract readReview
In one paragraph

Review in Advances in chronic kidney disease, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed, 1 pooled it
–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

50 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  4. Medications Influencing Serum Cystatin C Independent of Measured GFR.Journal of the American Society of Nephrology : JASN · 2026
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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

3 authors.

Alex R ChangKidney Health Research Institute, Geisinger Health System, Danville, PA; Department of Epidemiology and Health Services Research, Geisinger Health System, Danville, PA; Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins University, Baltimore, MD; and Divison of Nephrology, Johns Hopkins University, Baltimore, MA. Electronic address: achang@geisinger.edu.
Waleed ZafarKidney Health Research Institute, Geisinger Health System, Danville, PA; Department of Epidemiology and Health Services Research, Geisinger Health System, Danville, PA; Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins University, Baltimore, MD; and Divison of Nephrology, Johns Hopkins University, Baltimore, MA.
Morgan E GramsKidney Health Research Institute, Geisinger Health System, Danville, PA; Department of Epidemiology and Health Services Research, Geisinger Health System, Danville, PA; Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins University, Baltimore, MD; and Divison of Nephrology, Johns Hopkins University, Baltimore, MA.

Funding

Morbid Obesity, Bariatric Surgery, and Kidney FunctionK23DK106515 · NIDDK · GEISINGER CLINIC · PI CHANG, ALEXANDER R · 2015 to 2019
$890k
The comparative effectiveness of kidney transplantation in advanced CKDK08DK092287 · NIDDK · JOHNS HOPKINS UNIVERSITY · PI GRAMS, MORGAN ERIKA · 2012 to 2016
$793k
NIDDK NIH HHS K08 DK092287NIDDK NIH HHS K23 DK106515
6 · The paper itself

Abstract

As the prevalence of obesity continues to increase worldwide, an increasing number of people are at risk for kidney disease. Thus, there is a critical need to understand how best to assess kidney function in this population, and several challenges exist. The convention of indexing glomerular filtration rate (GFR) to body surface area (BSA) attempts to normalize exposure to metabolic wastes across populations of differing body size. In obese individuals, this convention results in a significantly lower indexed GFR than unindexed GFR, which has practical implications for drug dosing. Recent data suggest that "unindexing" estimated GFR (multiplying by BSA/1.73 m

Indexed as

Glomerular Filtration RateBiomarkersDecision Support TechniquesDrug Dosage CalculationsHumansKidney DiseasesObesityBiomarkerseGFRGlomerular filtration rateIndexingObesityScaling

Identifiers

PMID29499884
PMCPMC5836495

What OpenQuestion holds

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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.