SynthesisInternational journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics2021
Differential impact of COVID-19 in pregnant women from high-income countries and low- to middle-income countries: A systematic review and meta-analysis.
Synthesis in International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers, 3 of them syntheses that pooled it.
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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.
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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.
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Who cites it
42 citing papers in PubMed, 3 syntheses or guidelines pooled it.
- The impact of COVID-19 mitigation measures on neonatal health outcomes in sub-Saharan Africa: A systematic review and meta-analysis.Public health · 2025Pooled it
- Impact of the COVID-19 pandemic on access to and delivery of maternal and child healthcare services in low-and middle-income countries: a systematic review of the literature.Frontiers in public health · 2024Pooled it
- Differential impact of COVID-19 in pregnant women from high-income countries and low- to middle-income countries: A systematic review and meta-analysis.International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics · 2021Pooled it
- Right-sizing Incentives.Journal of development economics · 2026Article
- Late gestation stillbirth epidemiology: findings from a nationally representative mortality survey of one million population sample in India.BMC pregnancy and childbirth · 2026Article
- Mathematical Modeling of Obstetric Variables: Influence of COVID-19, Periodontal Disease and Dental Care During Pregnancy.Biomedicines · 2025Article
- A template tool for the evaluation of vaccines for emerging pathogens to be used for pregnant and breast-feeding women.Vaccine · 2025Review
- Intimate partner and family violence and mental health during the SARS-CoV-2 pandemic: a multi-country survey.Frontiers in psychiatry · 2025Article
- How do pandemic changed obstetric and neonatal outcomes: experience from a tertiary care center.Revista da Associacao Medica Brasileira (1992) · 2025Article
- Comparative analysis of COVID-19 pneumonia in pregnant versus matched non-pregnant women: radiologic, laboratory, and clinical perspectives.Scientific reports · 2024Article
- In Situ Analyses of Placental Inflammatory Response to SARS-CoV-2 Infection in Cases of Mother-Fetus Vertical Transmission.International journal of molecular sciences · 2024Article
- In need of robust evidence of non-association of pregestational and early pregnancy SARS-CoV-2 infections with congenital anomalies.EClinicalMedicine · 2024Review
- Impacts of COVID-19 on mothers' and newborns' health outcomes in regional Canada: A cross-sectional analysis.Heliyon · 2024Article
- "It's what we perceive as different": an interpretative phenomenological analysis of Nigerian women's characterization of their health during the COVID-19 pandemic.BMC women's health · 2024Article
- Article
- Factors associated with hospitalizations and deaths of pregnant women from Paraná due to COVID-19: a cross-sectional study.Revista brasileira de epidemiologia = Brazilian journal of epidemiology · 2024Observational
- No impact of COVID-19 at delivery on maternal mortality or infant adverse birth outcomes in Botswana during the Omicron era.PloS one · 2024Article
- Implications for implementation and adoption of telehealth in developing countries: a systematic review of China's practices and experiences.NPJ digital medicine · 2023Review
- Evolution of National Guidelines on Medicines Used to Treat COVID-19 in Pregnancy in 2020-2022: A Scoping Review.Journal of clinical medicine · 2023Article
- Substantial increase in stillbirth rate during the COVID-19 pandemic: results from a population-based study in the Indian state of Bihar.BMJ global health · 2023Article
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8 authors.
Funding
Abstract
backgroundSARS-CoV-2 has infected a large number of pregnant women.
objectiveTo compare clinical, perinatal outcomes of women with COVID-19 from high-income countries (HICs) and low- to middle-income countries (LMICs). SEARCH STRATEGY: Online databases were searched. SELECTION CRITERIA: Original studies on pregnant women with COVID-19 were included. DATA COLLECTION AND ANALYSIS: Information on clinical presentation, co-morbidities, pregnancy outcomes, neonatal outcomes, and SARS-CoV-2 infection in neonates was extracted. MAIN
resultsThe pooled estimate of SARS-CoV-2 positive neonates is 3.7%. Symptomatic presentations are less common in LMICs compared to HICs (odds ratio [OR] 0.38). Diabetes (OR 0.5), hypertension (OR 0.5), and asthma (OR 0.14) are commonly reported from HICs; hypothyroidism (OR 2.2), anemia (OR 3.2), and co-infections (OR 6.0) are commonly reported in LMICs. The overall risk of adverse pregnancy outcomes is higher in LMICs compared to HICs (OR 2.4). Abortion (OR 6.2), stillbirths (OR 2.0), and maternal death (OR 7.8) are more common in LMICs. Preterm births and premature rupture of membranes are comparable in both groups. Neonatal deaths (OR 3.7), pneumonia (OR 7.5), and neonatal SARS-CoV-2 infection (OR 1.8) are commonly reported in LMICs.
conclusionsIn LMICs, pregnant women and neonates are more vulnerable to adverse outcomes due to COVID-19. PROSPERO registration no: CRD42020198743.
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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.