Evidence map›Paper›PMID 30010794›Full record

Trial reportInternational journal of epidemiology2018

The effect of cumulative soil-transmitted helminth infections over time on child development: a 4-year longitudinal cohort study in preschool children using Bayesian methods to adjust for exposure misclassification.

Brittany Blouin, Martin Casapía, Lawrence Joseph, Jay S Kaufman, Charles Larson, Theresa W Gyorkos

Open access · bronzeAbstract readRandomized Controlled Trial
In one paragraph

Trial report in International journal of epidemiology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
1.5field-weighted citation impact, top 19% 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, 16 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
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

6 authors at 3 institutions in 2 countries.

Brittany BlouinDivision of Clinical Epidemiology, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada.
Martin CasapíaAsociación Civil Selva Amazónica, Iquitos, Peru.
Lawrence JosephDivision of Clinical Epidemiology, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada.
Jay S KaufmanDepartment of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, Quebec, Canada.
Charles LarsonDepartment of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, Quebec, Canada.
Theresa W GyorkosDivision of Clinical Epidemiology, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada.
McGill University · CAMcGill University Health Centre · CAAsociación para la Conservación de la Cuenca Amazónica · PE

Funding

Soil-Transmitted Helminthiases (STH) and DewormingP50AI098574 · NIAID · CIVIL ASSOCIATION OF THE AMAZON JUNGLE · PI CASAPIA, WILFREDO MARTIN · 2012 to 2016
$1.5M
CIHR MOP-110969NIAID NIH HHS P50 AI098574
6 · The paper itself

Abstract

Background: Limited research has documented an association between soil-transmitted helminth (STH) infections and child development. This has recently been identified as an important knowledge gap. Methods: A longitudinal cohort study was conducted in Iquitos, Peru, between September 2011 and July 2016. A cohort of 880 children, recruited at 1 year of age, was followed up to 5 years. STH infection was measured annually and child development was measured with the Wechsler Preschool and Primary Scale of Intelligence III (WPPSI-III) at 5 years. Linear-regression models were used to investigate the effect of the number of detected STH infections between 1 and 5 years of age on WPPSI-III scores at 5 years of age. Bayesian latent class analysis was used to adjust for exposure misclassification. Results: A total of 781 (88.8%) children were included in the analysis. In multivariable analysis, adjusted for STH misclassification, increasing numbers of Ascaris, Trichuris, hookworm and any STH infections were associated with lower WPPSI-III scores. Among the largest observed effects were those for the effect of Ascaris infection on verbal IQ scores [difference in IQ (95% CrI) for two, three, and four or five detected infections compared with zero or one infection: -8.27 (-13.85, -3.10), -6.69 (-12.05, -2.05) and -5.06 (-10.75, 0.05), respectively]. Misclassification of STH infection generally led to a bias towards the null. Conclusions: These results document an association between STH infection and child development. The results highlight the importance of adjusting for STH misclassification; however, future research is needed to accurately determine the sensitivity of STH diagnostic techniques. STH control in preschool children may contribute to lowering the disease burden associated with poor child development.

Indexed as

Child DevelopmentAnimalsBayes TheoremChild, PreschoolFemaleHelminthiasisHelminthsHumansInfantLinear ModelsLongitudinal StudiesMaleMultivariate AnalysisPeruSoilSoil

Identifiers

PMID30010794
PMCPMC6124617
OpenAlexW2883675664

What OpenQuestion holds

Textmetadata
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.