Evidence map›Paper›PMID 41029192›Full record

ArticleBMC pregnancy and childbirth2025

Effect of the COVID-19 lockdown in Shanghai on maternal and neonatal outcomes.

Xing Chen, Chengwen Jin, Yingfeng Xue, Tao Zhang, Jian Li, Chengjuan Jin

Abstract read
In one paragraph

Article in BMC pregnancy and childbirth, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing 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

2 citing papers in PubMed.

  1. Article
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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

6 authors.

Xing Chen *School of Marxism Studies, Ningbo University, 818 Fenghua Road, 315211 , Ningbo, China.
Chengwen Jin *Department of Central Laboratory, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, 241 Huaihai West Road, 200030, Shanghai, China.
Yingfeng XueDepartment of Gynecology, Zoucheng People's Hospital, 59 Qianquan Road, 273500, Zoucheng, China.
Tao Zhang *Zhejiang Provincial Center for Disease Control and Prevention, 3399, Binsheng Road, Hangzhou, China. tao_zhang@live.com.
Jian Li *Department of Neonatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, 650 XinSongjiang Road, Shanghai, 201600, China. 243075685@qq.com.
Chengjuan Jin *Department of Obstetrics and Gynecology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China. chengjuanjin@126.com.

Funding

National Natural Science Foundation of China 82002736Nosocomial Infection Management Project foundation of Shanghai General Hospital SYYG20221027Nosocomial Infection Management Project foundation of Shanghai General Hospital SYYGN202404
6 · The paper itself

Abstract

backgroundWe aimed to evaluate the effects of COVID-19 social restrictions on maternal and newborn outcomes in Shanghai from April 1 to May 31 of 2022.

methodsWe conducted a retrospective, cross-sectional analysis of all Live deliveries between April 1 and September 30 for the years 2021 and 2022 at our hospitals. Patients were assigned to three groups: “pre-lockdown” (April 1 to September 30, 2021), “during lockdown” (April 1 to May 31, 2022), and “post-lockdown” (June 1 to September 30, 2022). Cesarean delivery rate, pregnancy complications and neonatal outcomes were evaluated. Linear regression was used to model the continuous outcomes of birth weight and birth length, and logistic regression was implemented to model the binary outcomes of delivery mode, gestational diabetes mellitus (GDM), hypertension in pregnancy, neonatal asphyxia, fetal growth restriction (FGR), and preterm birth.

resultsA total of 2891 patients were enrolled in our study. Upon multivariate regression analysis and after adjustment for study epoch and patient characteristics, the lockdown period was associated with lower GDM (Exp(B) = 0.498; 95%CI, 0.379–0.655). The post-lockdown period was associated with a higher birth length (β = 0.040; 95%CI, 0.032–0.317) and more hypertension in pregnancy (Exp(B) = 1.683; 95%CI, 1.087–2.604) than the pre-lockdown period. The overall rates of cesarean delivery, preterm birth, neonatal asphyxia and FGR were not associated with the lockdown; however, maternal COVID-19 infection during lockdown was associated with a mean reduction of 150 g (95% CI, 11–288 g) in birth Weight at 37–39 weeks of gestation (p = 0.035).

conclusionsThe lockdown period was associated with a diminution in GDM, and unlike the pre-lockdown period, the post-lockdown period was associated with an increase in birth weight and hypertension in pregnancy. Maternal COVID-19 infection during lockdown was also associated with lower neonatal birth Weight in deliveries at 37–39 weeks of gestation. Lockdown played a certain degree of impact on pregnancy complications and neonatal outcomes.

Indexed as

COVID-19Pregnancy ComplicationsPregnancy OutcomeAdultAsphyxia NeonatorumBirth WeightCesarean SectionChinaCross-Sectional StudiesDiabetes, GestationalFemaleFetal Growth RetardationHumansHypertension, Pregnancy-InducedInfant, NewbornPregnancyBirth weightCOVID-19GDMHypertension in pregnancyLockdown

Identifiers

PMID41029192
PMCPMC12487318

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LicenceCC BY-NC-ND
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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.