Evidence map›Paper›PMID 35987638›Full record

ArticleMalaria journal2022

Assessing the relationship between gravidity and placental malaria among pregnant women in a high transmission area in Ghana.

Ayodele Akinnawo, Kaali Seyram, Ellen Boamah Kaali, Samuel Harrison, David Dosoo, Matthew Cairns, Kwaku Poku Asante

Open access · goldAbstract read
In one paragraph

Article in Malaria journal, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 2 pooled it
2.4field-weighted citation impact, top 12% 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

13 citing papers in PubMed, 2 syntheses or guidelines pooled it, 13 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Review
  4. Article
  5. Article
  6. Article
  7. Current update on malaria in pregnancy: a systematic review.Tropical diseases, travel medicine and vaccines · 2025
    Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. 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 at 3 institutions in 2 countries.

Ayodele AkinnawoLondon School of Hygiene and Tropical Medicine, London, UK. akinnawo.ay@gmail.com.ORCID http://orcid.org/0000-0003-2458-6272
Kaali SeyramResearch and Development Division, Kintampo Health Research Centre, Ghana Health Service, Kintampo North Municipality, Ghana.
Ellen Boamah KaaliResearch and Development Division, Kintampo Health Research Centre, Ghana Health Service, Kintampo North Municipality, Ghana.
Samuel HarrisonResearch and Development Division, Kintampo Health Research Centre, Ghana Health Service, Kintampo North Municipality, Ghana.
David DosooResearch and Development Division, Kintampo Health Research Centre, Ghana Health Service, Kintampo North Municipality, Ghana.
Matthew CairnsLondon School of Hygiene and Tropical Medicine, London, UK.
Kwaku Poku AsanteLondon School of Hygiene and Tropical Medicine, London, UK.
Kintampo Health Research Centre · GHLondon School of Hygiene & Tropical Medicine · GBUniversity of London · GB

Funding

Medical Research Council MR/R010161/1
6 · The paper itself

Abstract

backgroundMalaria infection during pregnancy can cause significant morbidity and mortality to a pregnant woman, her fetus and newborn. In areas of high endemic transmission, gravidity is an important risk factor for infection, but there is a complex relationship with other exposure-related factors, and use of protective measures. This study investigated the association between gravidity and placental malaria (PM), among pregnant women aged 14-49 in Kintampo, a high transmission area of Ghana.

methodsBetween 2008 and 2011, as part of a study investigating the association between PM and malaria in infancy, pregnant women attending antenatal care (ANC) clinics in the study area were enrolled and followed up until delivery. The outcome of PM was assessed at delivery by placental histopathology. Multivariable logistic regression analyses were used to investigate the association between gravidity and PM, identify other key risk factors, and control for potential confounders. Pre-specified effect modifiers including area of residence, socio-economic score (SES), ITN use and IPTp-SP use were explored.

resultsThe prevalence of PM was 65.9% in primigravidae, and 26.5% in multigravidae. After adjusting for age, SES and relationship status, primigravidae were shown to have over three times the odds of PM compared to multigravidae, defined as women with 2 or more previous pregnancies [adjusted OR = 3.36 (95% CI 2.39-4.71), N = 1808, P < 0.001]. The association appeared stronger in rural areas [OR for PG vs. MG was 3.79 (95% CI 3.61-5.51) in rural areas; 2.09 (95% CI 1.17-3.71) in urban areas; P for interaction = 0.07], and among women with lower socio-economic scores [OR for PG vs. MG was 4.73 (95% CI 3.08-7.25) amongst women with lower SES; OR = 2.14 (95% CI 1.38-3.35) among women with higher SES; P for interaction = 0.008]. There was also evidence of lower risk among primigravidae with better use of the current preventive measures IPTp and LLIN.

conclusionsThe burden of PM is most heavily focused on primigravidae of low SES living in rural areas of high transmission. Programmes should prioritize primigravidae and young women of child-bearing age for interventions such as LLIN distribution, educational initiatives and treatment to reduce the burden of malaria in first pregnancy.

Indexed as

AntimalarialsMalariaPregnancy Complications, ParasiticFemaleGhanaGravidityHumansInfant, NewbornPlacentaPregnancyPregnant PeoplePyrimethamineRisk FactorsSulfadoxineAntimalarialsPyrimethamineSulfadoxineGravidityMultigravidaePlacental malariaPrimigravidaeRegression modelSecundigravidaeTransmission

Identifiers

PMID35987638
PMCPMC9392271
OpenAlexW4294104555

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.