Evidence map›Paper›PMID 30658602›Full record

ArticleBMC pediatrics2019

Risk factors for recurrent severe anemia among previously transfused children in Uganda: an age-matched case-control study.

Aggrey Dhabangi, Richard Idro, Chandy C John, Walter H Dzik, Robert Opoka, Ronald Ssenyonga, Michael Boele van Hensbroek

Open access · goldAbstract readMulticenter Study
In one paragraph

Article in BMC pediatrics, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 1 pooled it
0.7field-weighted citation impact, top 28% 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

8 citing papers in PubMed, 1 synthesis or guideline pooled it, 12 citations in OpenAlex.

  1. Pooled it
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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 4 institutions in 3 countries.

Aggrey DhabangiChild Health and Development Centre, Makerere University College of Health Sciences, Mulago upper hill road, P O Box, 6717, Kampala, Uganda. adhabangi@gmail.com.ORCID 0000-0002-5615-3925
Richard IdroDepartment of Pediatrics and Child Health, Makerere University College of Health Sciences, Kampala, Uganda.
Chandy C JohnRyan White Centre for Pediatric Infectious Disease and Global Health, Indiana University School of Medicine, Indianapolis, IN, USA.
Walter H DzikDepartment of Pathology (Transfusion), Harvard University / Massachusetts General Hospital, Boston, MA, USA.
Robert OpokaDepartment of Pediatrics and Child Health, Makerere University College of Health Sciences, Kampala, Uganda.
Ronald SsenyongaClinical trials unit, Department of Epidemiology and Biostatistics, School of Public Health, Makerere University College of Health Sciences, Kampala, Uganda.
Michael Boele van HensbroekDepartment of Global Child Health, Emma Children's Hospital, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands.
Makerere University · UGEmma Kinderziekenhuis · NLHarvard University · USIndiana University School of Medicine

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIn resource-poor settings, transfused children often experience recurrence of severe anemia (SA) following discharge from hospital. This study determined the factors associated with recurrent severe anemia (RSA) among previously transfused Ugandan children aged less than 5 years.

methodsA case-control study was conducted in five hospitals in Uganda from March 2017 to September 2018. We prospectively enrolled 196 hospitalised children who had been transfused for severe anemia 2 weeks to 6 months prior to enrollment. Of these, 101 children (cases) were re-admitted with a hemoglobin [Hb] level of ≤6 g/dL and required transfusion; and 95 children (age-matched controls) were admitted for other clinical illness with a Hb > 6 g/dL. Children known to have sickle cell anemia, cancer, or bleeding disorders were excluded. Clinical and laboratory evaluation were done. Conditional logistic regression adjusted for age, was used to determine factors associated with RSA.

resultsThe median time (IQR) between the earlier transfusion and enrollment was 3.5 (1.9-5.7) months for cases, and was 5.0 (2.9-6.0) months for controls (p-value = 0.015). Risk factors (adjusted odds ratio, 95% confidence interval, and significance) for development of RSA were: hemoglobinuria (36.33, 2.19-600.66, p = 0.012); sickle cell anemia - newly diagnosed (20.26, 2.33-176.37, p = 0.006); history of earlier previous transfusions (6.95, 1.36-35.61, p = 0.020) and malaria infection (6.47, 1.17-35.70, p = 0.032).

conclusionMalaria chemoprevention, follow up visit for Hb check after discharge from hospital and sickle cell screening among previously transfused children represent practical strategies to prevent and identify children at risk for recurrent severe anemia. The cause of hemoglobinuria in children merits further investigations.

Indexed as

Blood TransfusionAge FactorsAnemiaCase-Control StudiesChild, PreschoolFemaleHumansInfantMaleRecurrenceRisk FactorsSeverity of Illness IndexUgandaChildrenHemoglobinuriaMalariaRecurrent severe anemiaSickle cell anemiaTransfusion

Identifiers

PMID30658602
PMCPMC6337863
OpenAlexW2917678433

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LicenceCC BY
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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.