Evidence map›Paper›PMID 31762898›Full record

Trial reportThe Pan African medical journal2019

Placental impression smears is a good indicator of placental malaria in sub-Saharan Africa.

Smaïla Ouédraogo, Manfred Accrombessi, Ismaël Diallo, Roussine Codo, Adama Ouattara, Laurent Ouédraogo, Achille Massougbodji, Michel Cot

Open access · goldAbstract readMulticenter StudyRandomized Controlled Trial
In one paragraph

Trial report in The Pan African medical journal, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed, 1 pooled it
0.4field-weighted citation impact, top 29% 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, 1 synthesis or guideline pooled it, 7 citations in OpenAlex.

  1. Pooled it
  2. The Effects of Malaria in Pregnancy on Neurocognitive Development in Children at 1 and 6 Years of Age in Benin: A Prospective Mother-Child Cohort.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2022
    Trial
  3. Current update on malaria in pregnancy: a systematic review.Tropical diseases, travel medicine and vaccines · 2025
    Review
  4. Review
  5. Article
  6. Placental Malaria.Current tropical medicine reports · 2020
    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

8 authors at 5 institutions in 3 countries.

Smaïla OuédraogoUnité de Formation et de Recherche en Science de la Santé, Université Joseph Ki-Zerbo, Ouagdougou, Burkina Faso.
Manfred AccrombessiFondation Scientifique pour la Recherche Scientifique, Cotonou, Benin.
Ismaël DialloUnité de Formation et de Recherche en Science de la Santé, Université Joseph Ki-Zerbo, Ouagdougou, Burkina Faso.
Roussine CodoFaculté de Médecine de Cotonou, Université d'Abomey-Calavi, Cotonou, Bénin.
Adama OuattaraUnité de Formation et de Recherche en Science de la Santé, Université Joseph Ki-Zerbo, Ouagdougou, Burkina Faso.
Laurent OuédraogoUnité de Formation et de Recherche en Science de la Santé, Université Joseph Ki-Zerbo, Ouagdougou, Burkina Faso.
Achille MassougbodjiFaculté de Médecine de Cotonou, Université d'Abomey-Calavi, Cotonou, Bénin.
Michel CotMERIT- Mère et Enfant Face aux Infections Tropicales, Institut de Recherche pour le Développement, Paris, France, Université Paris Descartes, Sorbonne Paris Cité, France.
Centre National de Recherche et de Formation sur le Paludisme · BFUniversité d'Abomey-Calavi · BJCentre Hospitalier Universitaire Yalgado Ouédraogo · BFSorbonne Paris Cité · FRUniversité de Ouahigouya

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionPlacental malaria (PM) is an important predictor of infant morbidity and mortality in sub-Saharan Africa. Although placental histology is the gold standard test to diagnose PM, the placenta impression smears remains widely used in epidemiological studies. This study is set to evaluate the performance of placental impression smears to detect PM in pregnant women in southern Benin.

methodsA cross-sectional analysis was performed on data collected in the framework a multicenter randomized clinical trial (Malaria in Pregnancy Preventive and Alternative Drugs). Samples from 491 pregnant women were examined in the district of Allada, Southern Benin.

resultsPlacental malaria detected by placenta impression smears and histology were prevalent in 11.4% and 10.8%, respectively. Sensitivity and specificity of placental impression smears were 90.6% and 98.4%. Among 55 pregnant women tested positive by placenta impression smears, 48 were positive by the histology, while 7 were negative (positive predictive value: 87.3%). Four hundred and twenty four (424) of the 429 tested negative by the placenta impression smears, were also negative according to histology whereas the rest (5 of 429) of the women were positive (negative predictive value: 98.8%).

conclusionPlacenta impression smear is an accurate and easy method for the diagnosis of placental malaria.

Indexed as

AdultBeninBiopsyCross-Sectional StudiesFemaleHumansMalaria, FalciparumPlacenta DiseasesPlasmodium falciparumPredictive Value of TestsPregnancyPregnancy Complications, ParasiticSensitivity and SpecificityYoung AdultPerformance, placenta impression smearsplacenta histologyplacental malariasub-Saharan Africa

Identifiers

PMID31762898
PMCPMC6859046
OpenAlexW2988771088

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.