Evidence map›Paper›PMID 25927378›Full record

Trial reportTrials2015

To assess whether addition of pyriproxyfen to long-lasting insecticidal mosquito nets increases their durability compared to standard long-lasting insecticidal mosquito nets: study protocol for a randomised controlled trial.

N'Fale Sagnon, Margaret Pinder, Emile Fs Tchicaya, Alfred B Tiono, Brian Faragher, Hilary Ranson, Steve W Lindsay

Open access · goldAbstract readComparative StudyMulticenter StudyRandomized Controlled Trial
In one paragraph

Trial report in Trials, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed, 1 pooled it
1.7field-weighted citation impact, top 14% 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

7 citing papers in PubMed, 1 synthesis or guideline pooled it, 11 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Stage-specific action of juvenile hormone analogs.Journal of pesticide science · 2021
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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.

N'Fale SagnonCentre National de Recherche et de Formation sur le Paludisme (CNRFP), Ouagadougou, Burkina Faso. n.fale.cnlp@fasonet.bf.
Margaret PinderSchool of Biological Sciences and Biomedicine, Durham University, Durham, UK. mpinder@mrc.gm.
Emile Fs TchicayaCentre Suisse de Recherches Scientifiques en Côte d'Ivoire, Abidjan, Côte d'Ivoire. tchicaya@hotmail.com.
Alfred B TionoCentre National de Recherche et de Formation sur le Paludisme (CNRFP), Ouagadougou, Burkina Faso. t.alfred@fasonet.bf.
Brian FaragherLiverpool School of Tropical Medicine, Liverpool, UK. Faragher@liv.ac.uk.
Hilary RansonLiverpool School of Tropical Medicine, Liverpool, UK. hranson@liverpool.ac.uk.
Steve W LindsaySchool of Biological Sciences and Biomedicine, Durham University, Durham, UK. S.W.Lindsay@durham.ac.uk.
Centre National de Recherche et de Formation sur le Paludisme · BFDurham University · GBLiverpool School of Tropical Medicine · GBSwiss Centre for Scientific Research · CI

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe effectiveness of pyrethroid-treated bednets for malaria control in sub-Saharan Africa is under threat because of high levels of resistance to pyrethroid insecticides in the vectors. Here we assess the durability of polyethylene nets with a novel combination of permethrin, a pyrethroid, with pyriproxyfen, an insect juvenile mimic (PPF-LLIN), in comparison with a typical permethrin-treated long-lasting insecticidal net (LLIN).

methodsThis is a cluster randomised controlled trial of net durability in Burkina Faso, with clustering at the level of the compound and includes entomological outcome measurements. Half the compounds in each village will be randomly allocated PPF-LLIN and half the LLIN. All sleeping places in a compound will be provided with one type of net. We will distribute the nets at the start of the first transmission season and follow net use at the start and end of each transmission season for 3 years. In one village, bio-efficacy and chemical content will be recorded immediately after net distribution and then at 6, 12, 18, 24, 30 and 36 months. In the other village net survivorship and fabric integrity will be recorded immediately after distribution, and then at 6, 12, 18, 24, 30 and 36 months. Routine measurements of indoor temperature and relative humidity will be made in both villages during the study. Residents will be followed for possible side effects of the PPF-LLIN by surveillance of known asthmatic subjects during the first month post-distribution and pregnancy outcomes will be monitored from antenatal clinic records. DISCUSSION: The protocol is novel on two accounts. Firstly, it is the first to describe the procedure for measuring net durability following recent World Health Organisation (WHO) guidelines. Meeting the minimum requirements set in the guidelines is essential before a new type of net can be recommended by WHO's Pesticide Evaluation Scheme (WHOPES). Secondly, it describes methods to monitor the persistence of an active ingredient that reduces vector fertility and fecundity. If the PPF-LLIN is both effective and persistent it will provide an alternative vector control strategy where pyrethroid-resistant vectors are present.

trial registrationISRCTN30634670 assigned 13 August 2014.

Indexed as

Disease VectorsInsecticidesInsecticide-Treated BednetsPermethrinPyridinesAnimalsAnophelesBurkina FasoEquipment FailureFemaleHumansHumidityMalariaMaleMosquito ControlPregnancyInsecticidesPermethrinPyridinespyriproxyfen

Identifiers

PMID25927378
PMCPMC4423132
OpenAlexW2165649845

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.