Evidence map›Paper›PMID 41469576›Full record

ArticleBMC pregnancy and childbirth2025

Global, regional, and national levels of maternal mortality, 1990-2021: a systematic analysis for the Global Burden of Disease Study 2021.

Ye Wei, Hong Luo, Xiaoyu Liu, Gongpeng Sun, Jianhong Liu, Xiao Wei, Canhui Cao, Ying Zheng

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 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing 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

6 citing papers in PubMed.

  1. Article
  2. Determinants of Pre-Eclampsia: Advancing a Conceptual Framework.BJOG : an international journal of obstetrics and gynaecology · 2026
    Article
  3. Article
  4. 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

8 authors.

Ye Wei *Department of Gynecologic Oncology, Sichuan University West China Second University Hospital, Chengdu, China.
Hong Luo *Department of Respiratory and Critical Care Medicine, West China Hospital and Division of Pulmonary Diseases, State Key Laboratory of Biotherapy of China, Sichuan University, Chengdu, Sichuan, China.
Xiaoyu Liu *Department of Obstetrics and Gynecology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Gongpeng SunDepartment of Ophthalmology, West China Hospital, Sichuan University, Chengdu, 610041, China.
Jianhong LiuDepartment of Gynecologic Oncology, Sichuan University West China Second University Hospital, Chengdu, China.
Xiao WeiSchool of Education Science, Liupanshui Normal University, Liupanshui, China.
Canhui CaoDepartment of Gynecologic Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China. canhuicao@tjh.tjmu.edu.cn.
Ying ZhengDepartment of Gynecologic Oncology, Sichuan University West China Second University Hospital, Chengdu, China. zhengying@scu.edu.cn.

Funding

National Key R&D Program of China 2022YFC2704103National Natural Science Foundation of China 82203453Natural Science Foundation of Hubei JCZRYB202500332
6 · The paper itself

Abstract

backgroundDespite global declines in the maternal mortality ratio (MMR), significant disparities persist across regions and socioeconomic strata. This study aims to examine spatiotemporal trends in MMR from 1990 to 2021, with a specific breakdown by age, socio-demographic index (SDI) and cause of death, to better clarify the underlying determinants of these patterns.

methodsUtilizing data from the Global Burden of Disease (GBD) Study 2021, we examined MMR trends attributable to ten distinct causes across 204 countries and territories from 1990 to 2021. Analyses were stratified by the SDI, and temporal patterns in age-specific and regional MMR distribution were evaluated.

resultsThe global MMR declined from 260.02 per 100,000 live births in 1990 to 147.77 per 100,000 live births in 2021. High SDI regions plateaued at 17.76 deaths per 100,000, whereas low-SDI regions continued to experience a significantly higher burdened (286.49 deaths per 100,000). Age-specific mortality exhibited a U-shaped curve, with peaks among individuals aged 10-19 years and 35-49 age groups. Maternal hemorrhage and hypertensive disorders emerged as the predominant global causes of maternal deaths, with regional variations: abortion-related complications prevailed in high-SDI regions, while sub-Saharan Africa bore a disproportionate burden from HIV/AIDS and other indirect causes disproportionately affected sub-Saharan Africa.

conclusionsThere is a persistent global disparity in MMR despite overall declines. Achieving the Sustainable Development Goals (SDGs) requires addressing inequities through strengthened health data systems, expanded maternal healthcare coverage, improved access to contraception and safe abortion, and enhanced health system monitoring. Evaluating SDI is crucial for tailored strategies to optimize health systems and improve maternal health outcomes worldwide.

Indexed as

Global Burden of DiseaseMaternal MortalityAdolescentAdultCause of DeathChildFemaleGlobal HealthHumansMiddle AgedPregnancySocioeconomic FactorsYoung AdultGlobal burden of diseaseMaternal mortality ratioSocio-demographic index

Identifiers

PMID41469576
PMCPMC12751556

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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.