Evidence map›Paper›PMID 41768868›Full record

ArticleJournal of hematology2026

Mean Corpuscular Volume in

James C Barton, J Clayborn Barton, Ronald T Acton

Abstract read
In one paragraph

Article in Journal of hematology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

1 citing paper in PubMed.

  1. Review
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.

James C BartonDepartment of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA.
J Clayborn BartonSouthern Iron Disorders Center, Birmingham, AL, USA.ORCID https://orcid.org/0000-0002-2646-4466
Ronald T ActonSouthern Iron Disorders Center, Birmingham, AL, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: The aim of this study was to define the relationships between mean corpuscular volume (MCV) and 12 clinical and laboratory variables in Methods: We retrospectively studied self-reported non-Hispanic white adult compound heterozygotes with transferrin saturation (TS) > 50% and serum ferritin (SF) > 300 µg/L (men) or TS > 45% and SF > 200 µg/L (women) who participated in primary care-based screening. In post-screening evaluations, we excluded participants with anemia, pregnancy, or medication use that increases MCV. We defined heavy alcohol intake as > 28 g/day in men and > 14 g/day in women. We determined associations of MCV with the following clinical and laboratory variables: age, sex, body mass index (BMI), diabetes, daily intakes of heme, non-heme, and supplemental iron, daily intakes of alcohol, swollen or tender second/third metacarpophalangeal (MCP) joints, reports of therapeutic phlebotomy, TS, and SF. Results: There were 74 participants (37 men, 37 women) of mean age 59 ± 12 (SD) years. Mean screening TS and SF were 65±13% and 529 ± 169 µg/L (men) and 59 ± 14% and 376 ± 195 µg/L (women). Post-screening values did not differ significantly. Mean MCV was 95.7 ± 4.0 fL. There was a negative correlation of MCV with BMI (P = 0.0488) and positive correlations of MCV with age (P = 0.0098), daily heme iron intake (P = 0.0333), and daily alcohol intake (P = 0.0113). Mean MCVs of 19 participants with and 55 without heavy alcohol intake were 97.8 ± 3.8 fL and 95.0 ± 3.9 fL, respectively; P = 0.0074). Linear regression on MCV confirmed positive associations with age (P = 0.0064) and daily alcohol intake (P = 0.0151). MCV was not significantly associated with sex, diabetes, daily intakes of non-heme and supplemental iron, swollen or tender second/third MCP joints, reports of therapeutic phlebotomy, TS, or SF. Conclusion: MCV in

Indexed as

AgeAlcoholHeavy alcohol intakeSerum ferritinTransferrin saturation

Identifiers

PMID41768868
PMCPMC12948473

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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.