Evidence map›Paper›PMID 22826494›Full record

ArticleThe American journal of tropical medicine and hygiene2012

No association of phenotypic ABO blood group and malaria during pregnancy.

Machteld E Boel, Marcus J Rijken, Mupawjay Pimanpanarak, Naw Lily Keereecharoen, Stephane Proux, François Nosten, Rose McGready

Open access · hybridAbstract read
In one paragraph

Article in The American journal of tropical medicine and hygiene, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed, 2 pooled it
1.3field-weighted citation impact, top 19% of its field
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

6 citing papers in PubMed, 2 syntheses or guidelines pooled it, 11 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Current update on malaria in pregnancy: a systematic review.Tropical diseases, travel medicine and vaccines · 2025
    Review
  5. Blood Groups in Infection and Host Susceptibility.Clinical microbiology reviews · 2015
    Review
  6. 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

7 authors.

Machteld E Boel
Marcus J Rijken
Mupawjay Pimanpanarak
Naw Lily Keereecharoen
Stephane Proux
François Nosten
Rose McGready

Funding

Wellcome Trust 089275
6 · The paper itself

Abstract

In a few small studies an association between blood group O and placental malaria has been described. The relationship between blood group and malaria in pregnancy (Plasmodium vivax and Plasmodium falciparum) was analyzed in 1,468 women from three longitudinal cohort studies in which weekly malaria screening was done systematically during pregnancy. One-third of women (447 of 1,468) had at least one malaria infection in pregnancy. The ABO blood group phenotype was not associated with the species of infection, frequency of malaria attacks, symptoms of malaria, hematocrit, or parasitemia during pregnancy.

Indexed as

ABO Blood-Group SystemFemaleHumansLongitudinal StudiesMalariaPhenotypePlacentaPlacenta DiseasesPlasmodium falciparumPlasmodium vivaxPregnancyPregnancy Complications, ParasiticThailandABO Blood-Group System

Identifiers

PMID22826494
PMCPMC3435346
OpenAlexW1973771972

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.