Evidence map›Paper›PMID 36521958›Full record

ArticleThe Lancet. Global health2023

Early-life stature, preschool cognitive development, schooling attainment, and cognitive functioning in adulthood: a prospective study in four birth cohorts.

Aryeh D Stein, Linda S Adair, Georgina Donati, Charlotte Wray, Linda M Richter, Shane A Norris, Alan Stein, Reynaldo Martorell, Manuel Ramirez-Zea, Ana M B Menezes and 5 more

Open access · goldAbstract read
In one paragraph

Article in The Lancet. Global health, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
3.2field-weighted citation impact, top 7% 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

14 citing papers in PubMed, 1 synthesis or guideline pooled it, 32 citations in OpenAlex.

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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

15 authors at 8 institutions in 6 countries.

Aryeh D SteinHubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA. Electronic address: aryeh.stein@emory.edu.
Linda S AdairDepartment of Nutrition, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
Georgina DonatiDepartment of Psychiatry, University of Oxford, Oxford, UK.
Charlotte WrayDepartment of Psychiatry, University of Oxford, Oxford, UK.
Linda M RichterDSI-NRF Centre of Excellence in Human Development, University of the Witwatersrand, Johannesburg, South Africa.
Shane A NorrisSAMRC Developmental Pathways for Health Research Unit, University of the Witwatersrand, Johannesburg, South Africa; Global Health Research Institute, School of Human Development and Health & NIHR Southampton Biomedical Research Centre, University of Southampton, Southampton, UK.
Alan SteinDepartment of Psychiatry, University of Oxford, Oxford, UK; MRC/Wits Rural Public Health and Health Transitions Research Unit (Agincourt), School of Public Health, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.
Reynaldo MartorellHubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA.
Manuel Ramirez-ZeaINCAP Research Center for Prevention of Chronic Diseases, Institute of Nutrition of Central America and Panama, Guatemala City, Guatemala.
Ana M B MenezesPostgraduate Program in Epidemiology, Federal University of Pelotas, Pelotas, Brazil.
Joseph MurrayPostgraduate Program in Epidemiology, Federal University of Pelotas, Pelotas, Brazil; Human Development and Violence Research Centre, Federal University of Pelotas, Pelotas, Brazil.
Cesar VictoraPostgraduate Program in Epidemiology, Federal University of Pelotas, Pelotas, Brazil.
Nanette LeeUSC-Office of Population Studies Foundation, University of San Carlos, Talamban, Cebu City, Cebu, Philippines.
Isabelita BasUSC-Office of Population Studies Foundation, University of San Carlos, Talamban, Cebu City, Cebu, Philippines.
COHORTS Group
Universidade Federal de Pelotas · BRUniversity of the Witwatersrand · ZAEmory University · USUniversity of Oxford · GBFoundation University · PHInstitute of Nutrition of Central America and Panama · GTUniversity of North Carolina at Chapel Hill · USUniversity of San Carlos · PH

Funding

Research Services CoreP2CHD050924 · NICHD · UNIV OF NORTH CAROLINA CHAPEL HILL · PI KAREN B GUZZO · 2015 to 2026
$9.6M
NICHD NIH HHS P2C HD050924
6 · The paper itself

Abstract

backgroundNutrition is important for growth and brain development and therefore cognitive ability. Growth faltering in early childhood, an important indicator of early adversity, is associated with poorer developmental outcomes, some into adulthood, but this association probably reflects early-life deprivation. We aimed to investigate the associations between early-life stature, child IQ, and adult IQ.

methodsIn this cohort study, we used prospective longitudinal data collected in four birth cohorts from Brazil (born in 1993), Guatemala (born in 1969-77), the Philippines (born in 1983-84), and South Africa (born in 1990). Using multivariable linear models, we estimated the relative contributions of early-life stature, child IQ, and schooling (highest school year completed) to adult IQ, including interaction effects among the early-childhood measures and schooling.

findingsWe included 2614 individuals in the analysis. Early-life stature was associated with adult IQ (range across eight site-by-sex groups -0·14 to 3·17 IQ points) and schooling (-0·05 to 0·77 years) per height-for-age Z-score. These associations were attenuated when controlling for child IQ (-0·86 to 1·72 for adult IQ and -0·5 to 0·60 for schooling). The association of early-life stature with adult IQ was further attenuated when controlling for schooling (-1·86 to 1·21). Child IQ was associated with adult IQ (range 3·91 to 10·02 points) and schooling (0·25 to 1·30 years) per SD of child IQ in all groups; these associations were unattenuated by the addition of early-life stature to the models. The interaction between schooling and child IQ, but not that between schooling and early-life stature, was positively associated with adult IQ across groups.

interpretationThe observed associations of early-life stature with adult IQ and schooling varied across cohorts and sexes and explained little variance in adult IQ beyond that explained by child IQ. These findings suggest that interventions targeted at growth for health and early development are important. Our results are consistent with the inference that improving long-term cognitive outcomes might require interventions that more specifically target early cognitive ability.

fundingBill & Melinda Gates Foundation.

Indexed as

Birth CohortChild DevelopmentAdultChild, PreschoolCognitionCohort StudiesHumansProspective StudiesSchools

Identifiers

PMID36521958
PMCPMC9764453
OpenAlexW4311274557

What OpenQuestion holds

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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.