Evidence map›Paper›PMID 28356159›Full record

ArticlePopulation health metrics2017

Prevalence and risk factors for anemia severity and type in Malawian men and women: urban and rural differences.

Aishatu L Adamu, Amelia Crampin, Ndoliwe Kayuni, Alemayehu Amberbir, Olivier Koole, Amos Phiri, Moffat Nyirenda, Paul Fine

Open access · goldAbstract read
In one paragraph

Article in Population health metrics, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 59 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
59citing papers in PubMed, 1 pooled it
6.5field-weighted citation impact, top 3% 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

59 citing papers in PubMed, 1 synthesis or guideline pooled it, 111 citations in OpenAlex.

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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

8 authors at 3 institutions in 3 countries.

Aishatu L AdamuBayero University Kano, Community Medicine, Kano, Nigeria.
Amelia CrampinLondon School of Hygiene and Tropical Medicine, London, United Kingdom.
Ndoliwe KayuniMalawi Epidemiology and Intervention Research Unit, Karonga, Malawi.
Alemayehu AmberbirLondon School of Hygiene and Tropical Medicine, London, United Kingdom.
Olivier KooleLondon School of Hygiene and Tropical Medicine, London, United Kingdom.
Amos PhiriMalawi Epidemiology and Intervention Research Unit, Karonga, Malawi.
Moffat NyirendaLondon School of Hygiene and Tropical Medicine, London, United Kingdom.
Paul FineLondon School of Hygiene and Tropical Medicine, London, United Kingdom.
Malawi Epidemiology and Intervention Research Unit · MWLondon School of Hygiene & Tropical Medicine · GBBayero University Kano · NG

Funding

Wellcome Trust 098610
6 · The paper itself

Abstract

backgroundThe global burden of anemia is large especially in sub-Saharan Africa, where HIV is common and lifestyles are changing rapidly with urbanization. The effects of these changes are unknown. Studies of anemia usually focus on pregnant women or children, among whom the burden is greatest. We describe prevalence and risk factors for anemia among rural and urban men and women of all ages in Malawi.

methodsWe analyzed data from a population-wide cross-sectional survey of adults conducted in two sites, Karonga (rural) and Lilongwe (urban), commencing in May 2013. We used multinomial logistic regression models, stratified by sex to identify risk factors for mild and moderate-to-severe anemia.

resultsAnemia prevalence was assessed among 8,926 men (age range 18-100 years) and 14,978 women (age range: 18-103 years). Weighted prevalence levels for all, mild, and moderate-to-severe anemia were 8.2, 6.7 and 1.2% in rural men; 19.4, 12.0 and 7.4% in rural women; 5.9, 5.1 and 0.8% in urban men; and 23.4, 13.6 and 10.1% in urban women. Among women, the odds of anemia were higher among urban residents and those with higher socioeconomic status. Increasing age was associated with higher anemia prevalence in men. Among both men and women, HIV infection was a consistent risk factor for severity of anemia, though its relative effect was stronger on moderate-to-severe anemia.

conclusionsThe drivers of anemia in this population are complex, include both socioeconomic and biological factors and are affecting men and women differently. The associations with urban lifestyle and HIV indicate opportunities for targeted intervention.

Indexed as

AdolescentAdultAgedAged, 80 and overAnemiaCross-Sectional StudiesFemaleHIV InfectionsHumansLogistic ModelsMalawiMaleMiddle AgedPrevalenceRisk FactorsRural PopulationAdultAnemia/epidemiologyAnemia severityMenRisk factorsRuralUrbanWomen

Identifiers

PMID28356159
PMCPMC5371260
OpenAlexW2598653401

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.