Evidence map›Paper›PMID 41321324›Full record

Trial reportInternational journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics2026

The impact of low-dose aspirin on hemoglobin levels in pregnancy: A secondary analysis of a randomized controlled trial for prevention of hypertensive disorders of pregnancy.

N M Ngcobo, V Dorsamy, C Bagwandeen, P Z Mkhize, J Moodley

Abstract readRandomized Controlled Trial
In one paragraph

Trial report in International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics, 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. Low-dose aspirin and anaemia risk in pregnancy: A scoping review with emphasis on low- and middle-income contexts.South African family practice : official journal of the South African Academy of Family Practice/Primary Care · 2026
    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

5 authors.

N M NgcoboSchool of Laboratory Medicine and Medical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa.ORCID https://orcid.org/0000-0002-2079-7630
V DorsamySchool of Laboratory Medicine and Medical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa.
C BagwandeenDepartment of Public Health Medicine, School of Nursing and Public Health, University of KwaZulu-Natal, Durban, South Africa.
P Z MkhizeWomen's Health and HIV Research Group, Department of Obstetrics and Gynaecology, University of KwaZulu-Natal, Durban, South Africa.
J MoodleyWomen's Health and HIV Research Group, Department of Obstetrics and Gynaecology, University of KwaZulu-Natal, Durban, South Africa.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesThis study evaluates the association of low-dose aspirin (LDA) with hemoglobin (Hb) levels during pregnancy and explores how changes in Hb levels relate to hypertensive disorders of pregnancy (HDP).

methodsThis secondary analysis of a randomized controlled trial comprised 249 pregnant women recruited from a regional hospital in Durban, South Africa (SA). Participants were randomized to receive either 162 mg of LDA daily (intervention) or standard care (control). Hemoglobin levels were measured at enrolment and again at birth. Data on maternal outcomes, including HDP, were analyzed in relation to changes in Hb levels to assess potential associations.

resultsAt enrolment, the predominant Hb range was 9.0-10.9 g/dL (mild anemia) in 51.4% of participants, with comparable Hb distributions between groups. By birth, 43.4% remained mildly anemic, while 44.2% had normal Hb levels (11-13 g/dL). Among participants who experienced a decline in Hb, the reduction was significantly mitigated in the intervention compared to the control group (ΔHb = -0.902 vs. -1.422, P = 0.002, η

conclusionLow-dose aspirin was associated with a smaller decline in Hb levels and lower HDP risk; consistent with a potential hematological benefit beyond preeclampsia prevention, although this represents an association rather than causation. Hemoglobin reduction might also serve as an early predictor of HDP.

Indexed as

AspirinHemoglobinsHypertension, Pregnancy-InducedPlatelet Aggregation InhibitorsAdultAnemiaFemaleHumansPregnancySouth AfricaYoung AdultAspirinHemoglobinsPlatelet Aggregation Inhibitorsanemiahemoglobinhypertensive disorders of pregnancylow‐dose aspirinpreeclampsia

Identifiers

PMID41321324
PMCPMC13094701

What OpenQuestion holds

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LicenceCC BY
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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.