Evidence map›Paper›PMID 34191801›Full record

ArticlePloS one2021

Prediction of preterm birth in nulliparous women using logistic regression and machine learning.

Reza Arabi Belaghi, Joseph Beyene, Sarah D McDonald

Registry-linked trialAbstract read
In one paragraph

Article in PloS one, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06974188 (AI-Powered CURAᵀᴹ Application for Identifying At-Risk Pregnancies in Obstetric Management), which is not on this map. Cited by 30 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing 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.

NCT06974188 nanot yet recruitingnot on this mapstarted 2025, after this paper: background citation

AI-Powered CURAᵀᴹ Application for Identifying At-Risk Pregnancies in Obstetric Management: A Randomized Controlled Trial (CURAte)

TypeinterventionalSponsorNational University Hospital, SingaporeRan2025 to 2027Enrolled1,700ConditionsHigh-risk Pregnancy, Pregnancy, Antenatal HealthArmsAI-risk Stratification
3 · Its place in the literature

Who cites it

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

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  12. Prediction of Preterm Birth among Infants with Orofacial Cleft Defects.The Cleft palate-craniofacial journal : official publication of the American Cleft Palate-Craniofacial Association · 2025
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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.

Reza Arabi BelaghiDepartment of Obstetrics and Gynecology, McMaster University, Hamilton, Ontario, Canada.
Joseph BeyeneDepartment of Health Research Methods, Evidence & Impact, McMaster University, Hamilton, Ontario, Canada.
Sarah D McDonaldDepartment of Obstetrics and Gynecology, McMaster University, Hamilton, Ontario, Canada.

Funding

CIHR 151520CIHR 950-229920
6 · The paper itself

Abstract

objectiveTo predict preterm birth in nulliparous women using logistic regression and machine learning.

designPopulation-based retrospective cohort.

participantsNulliparous women (N = 112,963) with a singleton gestation who gave birth between 20-42 weeks gestation in Ontario hospitals from April 1, 2012 to March 31, 2014.

methodsWe used data during the first and second trimesters to build logistic regression and machine learning models in a "training" sample to predict overall and spontaneous preterm birth. We assessed model performance using various measures of accuracy including sensitivity, specificity, positive predictive value, negative predictive value, and area under the receiver operating characteristic curve (AUC) in an independent "validation" sample.

resultsDuring the first trimester, logistic regression identified 13 variables associated with preterm birth, of which the strongest predictors were diabetes (Type I: adjusted odds ratio (AOR): 4.21; 95% confidence interval (CI): 3.23-5.42; Type II: AOR: 2.68; 95% CI: 2.05-3.46) and abnormal pregnancy-associated plasma protein A concentration (AOR: 2.04; 95% CI: 1.80-2.30). During the first trimester, the maximum AUC was 60% (95% CI: 58-62%) with artificial neural networks in the validation sample. During the second trimester, 17 variables were significantly associated with preterm birth, among which complications during pregnancy had the highest AOR (13.03; 95% CI: 12.21-13.90). During the second trimester, the AUC increased to 65% (95% CI: 63-66%) with artificial neural networks in the validation sample. Including complications during the pregnancy yielded an AUC of 80% (95% CI: 79-81%) with artificial neural networks. All models yielded 94-97% negative predictive values for spontaneous PTB during the first and second trimesters.

conclusionAlthough artificial neural networks provided slightly higher AUC than logistic regression, prediction of preterm birth in the first trimester remained elusive. However, including data from the second trimester improved prediction to a moderate level by both logistic regression and machine learning approaches.

Indexed as

Machine LearningPremature BirthAdultArea Under CurveFemaleHumansLogistic ModelsOntarioParityPregnancyPregnancy Trimester, FirstPregnancy Trimester, SecondRetrospective StudiesROC CurveYoung Adult

Identifiers

PMID34191801
PMCPMC8244906

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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.