Evidence map›Paper›PMID 28179024›Full record

Trial reportInfectious diseases of poverty2017

Impact of single annual treatment and four-monthly treatment for hookworm and Ascaris lumbricoides, and factors associated with residual infection among Kenyan school children.

Stella Kepha, Charles S Mwandawiro, Roy M Anderson, Rachel L Pullan, Fred Nuwaha, Jorge Cano, Sammy M Njenga, Maurice R Odiere, Elizabeth Allen, Simon J Brooker and 1 more

Open access · goldAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Infectious diseases of poverty, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 2 pooled it
1.0field-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

8 citing papers in PubMed, 2 syntheses or guidelines pooled it, 10 citations in OpenAlex.

  1. Pooled it
  2. Anthelmintic drugs for treating ascariasis.The Cochrane database of systematic reviews · 2020
    Pooled it
  3. Trial
  4. Trial
  5. Trial
  6. Article
  7. Article
  8. Prospects for elimination of soil-transmitted helminths.Current opinion in infectious diseases · 2017
    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

11 authors at 4 institutions in 3 countries.

Stella KephaSchool of Public Health, Makerere University College of Health Sciences, Kampala, Uganda. stellakepha2005@yahoo.com.
Charles S MwandawiroEastern and Southern Africa Centre of International Parasite Control, Kenya Medical Research Institute (KEMRI), Nairobi, Kenya.
Roy M AndersonLondon Centre for Neglected Tropical Disease Research, Department of Infectious Disease Epidemiology, School of Public Health, Imperial College London, London, UK.
Rachel L PullanLondon School of Hygiene and Tropical Medicine, London, UK.
Fred NuwahaSchool of Public Health, Makerere University College of Health Sciences, Kampala, Uganda.
Jorge CanoLondon School of Hygiene and Tropical Medicine, London, UK.
Sammy M NjengaEastern and Southern Africa Centre of International Parasite Control, Kenya Medical Research Institute (KEMRI), Nairobi, Kenya.
Maurice R OdiereCentre for Global Health Research, KEMRI, Kisumu, Kenya.
Elizabeth AllenLondon School of Hygiene and Tropical Medicine, London, UK.
Simon J BrookerLondon School of Hygiene and Tropical Medicine, London, UK.
Birgit NikolayLondon School of Hygiene and Tropical Medicine, London, UK.
London School of Hygiene & Tropical Medicine · GBKenya Medical Research Institute · KEMakerere University · UGLondon Centre for Neglected Tropical Disease Research · GB

Funding

Wellcome Trust 087540Wellcome Trust 098045
6 · The paper itself

Abstract

backgroundSchool-based deworming is widely implemented in various countries to reduce the burden of soil-transmitted helminths (STHs), however, the frequency of drug administration varies in different settings. In this study, we compared the impact of a single annual treatment and 4-monthly treatment over a follow-up among Kenyan school children, and investigated the factors associated with residual infection.

methodsWe performed a secondary analysis of data from a randomized trial investigating whether deworming for STHs alters risk of acquiring malaria. Children received either a single treatment or 4-monthly albendazole treatments were followed longitudinally from February 2014 to October 2014. The relative impact of treatment and factors associated with residual infections were investigated using mixed-effects regression models. Predisposition to infection was assessed based on Spearman's rank and Kendall's Tau correlation coefficients.

resultsIn the 4-monthly treatment group, the proportion of children infected with hookworm decreased from 59.9 to 5.7%, while Ascaris lumbricoides infections dropped from 55.7 to 6.2%. In the single treatment group, hookworm infections decreased over the same time period from 58.7 to 18.3% (12.6% absolute difference in reduction, 95% CI: 8.9-16.3%), and A. lumbricoides from 56.7 to 23.3% (17.1% absolute difference in reduction, 95% CI: 13.1-21.1%). There was strong evidence for predisposition to both STH types. Residual hookworm infection among children on 4-monthly treatment were associated with male sex and baseline nutritional status, whereas A. lumbricoides infection was associated with individual and school-level infection at baseline, latrine cleanliness at schools.

conclusionsThis study found that 4-monthly treatment w more effective than single annual treatment. Repeated treatments led to dramatic reductions in the intensities of STHs, but did not completely clear infections among school children in Kenya, a presumed reflection of reinfection in a setting where there is ongoing transmission.

Indexed as

StudentsAdolescentAlbendazoleAncylostomatoideaAnimalsAnthelminticsAscariasisAscaris lumbricoidesChildChild, PreschoolFemaleHookworm InfectionsHumansKenyaLongitudinal StudiesMaleAlbendazoleAnthelminticsAlbendazoleKenyaSchool-based dewormingSchool childrenSoil-transmitted helminths

Identifiers

PMID28179024
PMCPMC5299645
OpenAlexW2581642206

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.