Evidence map›Paper›PMID 23448550›Full record

ArticleBMC nephrology2013

Reference values for glomerular filtration rate in healthy Brazilian adults.

Ariana Aguiar Soares, Aline Bodanese Prates, Letícia Schwerz Weinert, Francisco Veríssimo Veronese, Mirela Jobim de Azevedo, Sandra Pinho Silveiro

Abstract read
In one paragraph

Article in BMC nephrology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing 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

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

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. CKD: A Call for an Age-Adapted Definition.Journal of the American Society of Nephrology : JASN · 2019
    Review
  7. Article
  8. Article
  9. Normalization of glomerular filtration rate in obese children.Pediatric nephrology (Berlin, Germany) · 2016
    Article
  10. Article
  11. 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

6 authors.

Ariana Aguiar SoaresPostgraduate Program in Medical Sciences: Endocrinology, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 90040-060, Brazil.
Aline Bodanese Prates
Letícia Schwerz Weinert
Francisco Veríssimo Veronese
Mirela Jobim de Azevedo
Sandra Pinho Silveiro

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundGlomerular filtration rate (GFR) is the best index of renal function, but age, gender and ethnicity can putatively affect its values. The aim of this study was to establish reference values for GFR in healthy Brazilian subjects while taking these factors into account.

methodsIn this cross-sectional study, GFR was measured by the 51Cr-EDTA single-injection method. GFR reference values were developed according to CLSI Guidelines for Defining, Establishing, and Verifying Reference Intervals in the Clinical Laboratory (CLSI C28 protocol).

resultsThe age range of the 285 healthy individuals was 19 to 70  years, 57% were females, and GFR was 106 ± 18 mL/min/1.73 m(2). There was no difference between male and female GFRs (108 ± 18 vs. 104 ± 18 mL/min/1.73 m(2) respectively, P = 0.134), and reference values were therefore developed from the pooled sample. GFR values were lower in subjects aged ≥45 years as compared with those younger than 45 years (98 ± 15 vs.112 ± 18 mL/min/1.73 m(2), P < 0.001). Based on mean ± 2 SD, GFR reference values were 76 to 148 mL/min/1.73 m(2) for subjects younger than 45 years and 68 to 128 mL/min/1.73 m(2) for individuals older than 45 years, irrespective of gender.

conclusionThe age-adjusted reference intervals reported may be reliably adopted to evaluate kidney function, since they are based on recommended standards.

Indexed as

Glomerular Filtration RateAdultAgedAge DistributionBrazilFemaleHumansMaleMiddle AgedNephrologyReference ValuesReproducibility of ResultsSensitivity and SpecificitySex DistributionYoung Adult

Identifiers

PMID23448550
PMCPMC3599407

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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.