Evidence map›Paper›PMID 34095788›Full record

ArticleEClinicalMedicine2020

Concerning trends in maternal risk factors in the United States: 1989-2018.

Eran Bornstein, Yael Eliner, Frank A Chervenak, Amos Grünebaum

Abstract read
In one paragraph

Article in EClinicalMedicine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 58 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
58citing 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

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

  1. Pooled it
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  12. The rising tide: Trends in induction of labor at term over a 5-year period at a single centre.International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics · 2025
    Observational
  13. Article
  14. Article
  15. A Review of the Diagnosis, Risk Factors, and Role of Angiogenetic Factors in Hypertensive Disorders of Pregnancy.Medical science monitor : international medical journal of experimental and clinical research · 2025
    Review
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  17. Ambulatory care utilization in the first 24 months' postpartum by rurality and pregnancy-related conditions: A prospective cohort study from Maine.The Journal of rural health : official journal of the American Rural Health Association and the National Rural Health Care 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

4 authors.

Eran BornsteinDivision of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Lenox Hill Hospital - Northwell Health/Zucker School of Medicine, New York, NY, United States.
Yael ElinerBoston University, School of Public Health, Boston, MA, United States.
Frank A ChervenakDivision of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Lenox Hill Hospital - Northwell Health/Zucker School of Medicine, New York, NY, United States.
Amos GrünebaumDivision of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Lenox Hill Hospital - Northwell Health/Zucker School of Medicine, New York, NY, United States.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIncreased efforts have focused on reducing maternal morbidity and mortality in the United States (US). Hypertensive disorders of pregnancy, chronic hypertension, diabetes mellitus, very advanced maternal age, and grand multiparity are known contributors to various maternal morbidities, as well as maternal mortality. We aimed to evaluate the trends in these risk factors/complications among US pregnancies during the last three decades (1989-2018).

methodsThis is a retrospective study based on the CDC natality database. We calculated the annual prevalence of each risk factor/complication from 1989 to 2018. Joinpoint regression analysis was then used to evaluate the trends. Annual percentage changes (APC) were calculated for each of the segments identified by the joinpoint regression, and average annual percentage changes (AAPC) were calculated for the entire period. Relative risks (RR) comparing the prevalence of each risk factor/complication in 2018 to its prevalence in 1989 were also calculated. Subsequent analyses evaluated the trends of the main risk factors/complications by maternal age groups. Statistical significance was determined at

findingsBetween 1989 and 2018, the prevalence of hypertensive disorders of pregnancy increased by 149% (AAPC 3·2, 95% CI 2·6-3·8), that of chronic hypertension increased by 182% (AAPC 3·7, 95% CI 3·3-4·2), that of diabetes mellitus increased by 261% (AAPC 4·6, 95% CI 4·0-5·2), that of very advanced maternal age increased by 194% (AAPC 3·8, 95% CI 3·6-4·0), and that of grand multiparity increased by 33% (AAPC 1·0, 95% CI 0·8-1·2). Chronic hypertension and diabetes mellitus increased mostly during the past two decades, while hypertensive disorders of pregnancy and grand multiparity increased primarily over the most recent decade. Additionally, women of very advanced maternal age had significantly higher rates of hypertensive disorders of pregnancy, chronic hypertension and diabetes mellitus throughout our study period.

interpretationOur study shows a marked increase in the prevalence of five pregnancy risk factors/complications over the past three decades (1989-2018). This may point to a significant deterioration in the health of US pregnant women, which potentially contributes to both maternal morbidity and mortality.

fundingNone.

Indexed as

Advanced maternal ageChronic hypertensionDiabetes mellitusGrand multiparityHypertensive disorders of pregnancyPregnancy risk factors

Identifiers

PMID34095788
PMCPMC8164172

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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.