Evidence map›Paper›PMID 34284680›Full record

SynthesisThe Journal of international medical research2021

Global prevalence of long-term neurodevelopmental impairment following extremely preterm birth: a systematic literature review.

Sujata P Sarda, Grammati Sarri, Csaba Siffel

Abstract readSystematic Review
In one paragraph

Synthesis in The Journal of international medical research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed, 2 pooled it
–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

47 citing papers in PubMed, 2 syntheses or guidelines pooled it.

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  19. A Compassion-Focused Approach to Support Parents After Preterm Birth.Clinical child and family psychology review · 2025
    Review
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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

3 authors.

Sujata P SardaGlobal Evidence and Outcomes, Takeda, Lexington, MA, USA.
Grammati SarriEvidence Synthesis, Modeling & Communication, Evidera, London, UK.
Csaba SiffelGlobal Evidence and Outcomes, Takeda, Lexington, MA, USA.ORCID https://orcid.org/0000-0002-6491-6953

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveNeurodevelopmental impairment (NDI) is a major complication of extreme prematurity. This systematic review was conducted to summarize the worldwide long-term prevalence of NDI associated with extreme prematurity.

methodsEmbase and MEDLINE databases were searched for epidemiologic and observational/real-world studies, published in English between 2011 and 2016, reporting long-term prevalence of NDI (occurring from 1 year) among extremely preterm infants born at gestational age (GA) ≤28 weeks.

resultsOf 2406 articles identified through searches, 69 met the protocol NDI definition (24 North America, 25 Europe, 20 Rest of World). Prevalence of any severity NDI in North America was 8%-59% at 18 months to 2 years, and 11%-37% at 2-5 years; prevalence of moderate NDI in Europe was 10%-13% at 18 months to 2 years, 3% at 2-5 years, and 9%-19% at ≥5 years; prevalence of any NDI in Rest of World was 15%-61% at 18 months to 2 years, and 42% at 2-5 years (no North America/Rest of World studies reported any NDI at ≥5 years). A trend toward higher prevalence of NDI with lower GA at birth was observed.

conclusionsExtreme prematurity has a significant long-term worldwide impact on neurodevelopmental outcomes.

Indexed as

Infant, Extremely PrematurePremature BirthChildDevelopmental DisabilitiesEuropeFemaleGestational AgeHumansInfantInfant, NewbornNorth AmericaPregnancyPrevalencedevelopmental disabilitieslong-term outcomeneurodevelopmentPremature birthprevalencesystematic review

Identifiers

PMID34284680
PMCPMC8299900

What OpenQuestion holds

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Registered trials

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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.