Evidence map›Paper›PMID 35651280›Full record

ArticleJournal of clinical hypertension (Greenwich, Conn.)2022

Blood pressure trajectories during pregnancy and preterm delivery: A prospective cohort study in China.

Fanfan Chan, Songying Shen, Peiyuan Huang, Jianrong He, Xueling Wei, Jinhua Lu, Lifang Zhang, Xiaoyan Xia, Huimin Xia, Kar Keung Cheng and 3 more

Open access · diamondAbstract read
In one paragraph

Article in Journal of clinical hypertension (Greenwich, Conn.), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
1.8field-weighted citation impact, top 15% 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

6 citing papers in PubMed, 10 citations in OpenAlex.

  1. Blood pressure trajectories during pregnancy, labor, and postpartum period: a multicenter study in Japan.Hypertension research : official journal of the Japanese Society of Hypertension · 2026
    Observational
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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

13 authors at 5 institutions in 3 countries.

Fanfan ChanDivision of Birth Cohort Study, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China.
Songying ShenDivision of Birth Cohort Study, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China.
Peiyuan HuangDivision of Birth Cohort Study, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China.
Jianrong HeDivision of Birth Cohort Study, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China.
Xueling WeiDivision of Birth Cohort Study, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China.
Jinhua LuDivision of Birth Cohort Study, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China.
Lifang ZhangDivision of Birth Cohort Study, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China.
Xiaoyan XiaDivision of Birth Cohort Study, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China.
Huimin XiaDivision of Birth Cohort Study, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China.
Kar Keung ChengInstitute of Applied Health Research, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK.
Shakila ThangaratinamWHO Collaborating Centre for Women's Health, Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, UK.
Ben Willem MolDepartment of Obstetrics and Gynecology, School of Medicine, Monash University, Melbourne, Australia.
Xiu QiuDivision of Birth Cohort Study, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China.ORCID 0000-0003-1248-229X
Guangdong Province Stomatological Hospital · CNBirmingham Women's Hospital · GBGuangzhou Medical University · CNMonash University · AUUniversity of Birmingham · GB

Funding

The Department of Science and Technology of Guangdong Province 2019B020227001The Department of Science and Technology of Guangdong Province 2019B030316014The National Natural Science Foundation of China 81803251The National Natural Science Foundation of China 82173525
6 · The paper itself

Abstract

Women's blood pressure (BP) changes throughout pregnancy. The effect of BP trajectories on preterm delivery is not clear. The authors aim to evaluate the association between maternal BP trajectories during pregnancy and preterm delivery. The authors studied pregnant women included in the Born in Guangzhou Cohort Study in China between February 2012 and June 2016. Maternal BP was measured at antenatal visits between 13 and 40 gestational weeks, and gestational age of delivery data was collected. The authors used linear mixed models to capture the BP trajectories of women with term, and spontaneous and iatrogenic preterm delivery. BP trajectories of women with various gestational lengths (34, 35, 36, 37, 38, 39, 40 weeks) were compared. Of the 17 426 women included in the analysis, 618 (3.55%) had spontaneous preterm delivery; 158 (.91%) had iatrogenic preterm delivery; and 16 650 (95.55%) women delivered at term. The BP trajectories were all J-shaped curves for different delivery types. Women with iatrogenic preterm delivery had the highest mean BP from 13 weeks till delivery, followed by those with spontaneous preterm delivery and term delivery (p < .001). Trajectory analysis stratified by maternal parity showed similar results for nulliparous and multiparous women. Excluding women with pre-eclampsia and gestational hypertension (GH) significantly attenuated the aforementioned association. Also, women with shorter gestational length tend to have higher BP trajectories during pregnancy. In conclusion, Women with spontaneous preterm delivery have a higher BP from 13 weeks till delivery than women with term delivery, while women with iatrogenic preterm delivery have the highest BP.

Indexed as

Hypertension, Pregnancy-InducedPremature BirthBlood PressureChinaCohort StudiesFemaleGestational AgeHumansIatrogenic DiseaseInfant, NewbornMalePregnancyProspective Studiesblood pressureiatrogenic preterm deliverypregnancypreterm deliveryspontaneous preterm delivery

Identifiers

PMID35651280
PMCPMC9180333
OpenAlexW4281650456

What OpenQuestion holds

Textmetadata
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.