Causal effect of school-entry age on long-run family formation: Quasi-experimental evidence from 14 million individuals in Vietnam.

Ishaan Busireddy, Janny Liao, Dat Hoang Vu, Tam Ngo Minh Tran, Jan-Walter De Neve

Abstract read

In one paragraph

Article in PNAS nexus, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it

0cells of the map it votes in

0citing 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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

5 authors.

Ishaan BusireddySchool of Engineering, Stanford University, Stanford, CA 94305, USA.ORCID https://orcid.org/0009-0004-3492-3177

Janny LiaoHarvard College, Harvard University, Cambridge, MA 02138, USA.

Dat Hoang VuInstitute of Vietnam and World Economy, Vietnam Academy of Social Sciences, Hanoi, 10000, Vietnam.ORCID https://orcid.org/0009-0005-6454-4976

Tam Ngo Minh TranNew York University, Global Programs, Washington, DC 20005, USA.ORCID https://orcid.org/0000-0002-8713-0419

Jan-Walter De NeveHeidelberg Institute of Global Health, Faculty of Medicine and University Hospital, University of Heidelberg, 69120 Heidelberg, Germany.ORCID https://orcid.org/0000-0003-0090-8249

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

School-entry age has been suggested to affect human capital development. Little is known, however, about the impacts of school-entry age on long-run outcomes, particularly in lower-income countries where most children and adolescents worldwide reside. We exploit a natural experiment based on school-entry rules in Vietnam to examine the causal effect of school-entry age on educational outcomes and family formation. Data on children's school-entry age, education, childbearing, marriage, and mortality in the next generation are extracted from the longitudinal Young Lives study conducted between 2001 and 2016 (

Identifiers

PMID42099579

DOI10.1093/pnasnexus/pgag119

PMCPMC13147269

What OpenQuestion holds

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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.