Evidence map›Paper›PMID 30285066›Full record

ArticleAmerican journal of clinical pathology2019

Establishing Pediatric and Adult RBC Reference Intervals With NHANES Data Using Piecewise Regression.

Victor L Fulgoni, Sanjiv Agarwal, Mark D Kellogg, Harris R Lieberman

Abstract read
In one paragraph

Article in American journal of clinical pathology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 2 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

20 citing papers in PubMed, 2 syntheses or guidelines pooled it.

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  19. CALIPER Hematology Reference Standards (I).American journal of clinical pathology · 2020
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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

4 authors.

Victor L FulgoniHenry M. Jackson Foundation, Bethesda, MD.
Sanjiv AgarwalOak Ridge Institute for Science and Education, Belcamp, MD.
Mark D KelloggDepartment of Laboratory Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA.
Harris R LiebermanMilitary Nutrition Division, US Army Research Institute of Environmental Medicine, Natick, MA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Objectives: To develop age- and sex-specific RBC reference intervals using the National Health and Nutrition Examination Survey (NHANES) 1999 to 2012, a large nationally representative, population-based, cross-sectional database (n = 44,328). Methods: Comprehensive medical data were used to define a "healthy" population. Reference intervals for RBC count, hemoglobin, hematocrit, mean cell hemoglobin, mean cell hemoglobin concentration, mean cell volume, and red cell distribution width were computed using piecewise regression, an evidence-based statistical procedure that identifies breakpoints. Results: The derived reference intervals were sex specific, unlike many current standards, and more precise for individuals of different ages, especially for children, adolescents, and elderly individuals, as additional breakpoints were detected for these groups. Suggested reference values for hematocrit and hemoglobin of older adult males were substantially lower than current values. Conclusions: The reference intervals provided here, based on a large, nationally representative healthy population, contribute to the ongoing transition to precision medicine.

Indexed as

Erythrocyte CountErythrocyte IndicesHematocritNutrition SurveysAdolescentAdultAgedAge FactorsChildChild, PreschoolFemaleHemoglobinsHumansInfantMaleMiddle AgedHemoglobins

Identifiers

PMID30285066
PMCPMC6306047

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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.