Evidence map›Paper›PMID 29925371›Full record

ArticleMalaria journal2018

Bed nets used to protect against malaria do not last long in a semi-arid area of Ethiopia: a cohort study.

Tarekegn Solomon, Eskindir Loha, Wakgari Deressa, Meshesha Balkew, Taye Gari, Hans J Overgaard, Bernt Lindtjørn

Erratum issuedAbstract read
In one paragraph

Article in Malaria journal, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
–field-weighted citation impact
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

23 citing papers in PubMed.

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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors.

Tarekegn SolomonSchool of Public and Environmental Health, Hawassa University, Hawassa, Ethiopia. tarekegn2solomon@yahoo.com.ORCID http://orcid.org/0000-0003-0923-2740
Eskindir LohaSchool of Public and Environmental Health, Hawassa University, Hawassa, Ethiopia.
Wakgari DeressaDepartment of Preventive Medicine, School of Public Health, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia.
Meshesha BalkewAklilu Lemma Institute of Pathobiology, Addis Ababa University, Addis Ababa, Ethiopia.
Taye GariSchool of Public and Environmental Health, Hawassa University, Hawassa, Ethiopia.
Hans J OvergaardNorwegian University of Life Sciences, Ås, Norway.
Bernt LindtjørnCentre for International Health, University of Bergen, Bergen, Norway.

Funding

Research Council of Norway through the GLOBVAC programme Project number: 220554
6 · The paper itself

Abstract

backgroundLong-lasting insecticidal nets (LLINs) are a key tool for malaria prevention and control. Currently, the recommended serviceable life of an LLIN is 3 years under field conditions. However, field studies show considerable variation in LLIN lifespan, from less than 2 years to more than 4 years. This study aimed to determine the attrition, physical integrity, functional survival, and bio-efficacy of LLINs under field conditions in south-central Ethiopia.

methodsIn October 2014, 7740 LLINs (PermaNet

resultsThe overall attrition of LLINs was 96% (n = 993) during the study period. The nets' attrition was mainly due to disposal (64.2%; n = 638). The proportion of LLINs with a hole size 0.5 cm or larger was 79.5% after 24 months. The use of the net on the previous night and having a clean net were associated with a good physical integrity. However, living in a household more than 1 km away from the mosquitoes' breeding site was associated with poor physical integrity. By the 24th month, only 4% of the nets met the criteria for functional survival. The median functional survival time of the nets was 12 months. A longer functional survival was associated with having a clean net, and shorter survival was associated with living in a household more than 1 km away from the mosquitoes' breeding site. The PermaNet

conclusionsThe study showed that the median serviceable life of LLINs is only 12 months. However, the bio-efficacy of the LLINs is acceptable for at least 24 months. Therefore, stronger and more efficient LLINs need to be developed for conditions similar to those studied here.

Indexed as

EnvironmentHumidityMosquito ControlCohort StudiesEthiopiaFamily CharacteristicsInsecticidesInsecticide-Treated BednetsMalariaInsecticidesAttritionDurabilityEthiopiaFunctional survivorshipLong-lasting insecticide netsPhysical integrity

Identifiers

PMID29925371
PMCPMC6011348

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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.