Observational studyBMC pregnancy and childbirth2020
Prevalence of anemia and iron deficiency anemia in Chinese pregnant women (IRON WOMEN): a national cross-sectional survey.
Observational study in BMC pregnancy and childbirth, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 3 of them syntheses that pooled it.
What it found
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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.
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.
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Who cites it
34 citing papers in PubMed, 3 syntheses or guidelines pooled it, 69 citations in OpenAlex.
- The Prevalence of Anemia among Pregnant Women in China: A Systematic Review and Meta-Analysis.Nutrients · 2024Pooled it
- A meta-analysis of ferric carboxymaltose versus other intravenous iron preparations for the management of iron deficiency anemia during pregnancy.Revista brasileira de ginecologia e obstetricia : revista da Federacao Brasileira das Sociedades de Ginecologia e Obstetricia · 2024Pooled it
- Nutritional factors for anemia in pregnancy: A systematic review with meta-analysis.Frontiers in public health · 2022Pooled it
- Association of maternal longitudinal haemoglobin concentrations with adverse pregnancy outcomes: A prospective cohort study.Journal of global health · 2026Observational
- Prevalence, risk factors, and adverse maternal and fetal outcomes of anemia during pregnancy: a retrospective study in China, 2012-2020.BMC pregnancy and childbirth · 2026Article
- [Recent advances in the management of iron deficiency and iron deficiency anemia during pregnancy].Zhonghua xue ye xue za zhi = Zhonghua xueyexue zazhi · 2026Review
- Incidence and factors on anaemia during pregnancy in China: a multicentre prospective cohort study.Journal of global health · 2026Observational
- Maternal mineral nutrition during early pregnancy and neonatal growth: findings from a China birth cohort study.Frontiers in nutrition · 2026Article
- The effect of late-gestational anemia on maternal and neonatal outcomes in twin pregnancies: a retrospective cohort study.Annals of medicine · 2025Article
- Nutrition and non-nutrition determinants of maternal mental disorders, stress and depression in pregnancy amidst a global pandemic: findings from Action against Stunting Hub Indonesia.The British journal of nutrition · 2025Article
- The effect of multiple micronutrients supplementation on preventing anemia during pregnancy: a retrospective cohort study.Nutrition & metabolism · 2025Article
- Four oral iron supplements for treating iron-deficiency anemia during pregnancy in China: a cost-effectiveness and budget analysis.Frontiers in public health · 2025Article
- Malaria and Soil-Transmitted Helminth Co-Infection and Its Association With Anemia Among Pregnant Women Visiting Mizan-Tepi University Teaching Hospital, Southwest Ethiopia.The Canadian journal of infectious diseases & medical microbiology = Journal canadien des maladies infectieuses et de la microbiologie medicale · 2025Article
- The associations of maternal serum ferritin levels with hypertensive disorders of pregnancy: a longitudinal cohort study.Frontiers in nutrition · 2025Article
- Relationships between hemoglobin levels at admission and adverse maternal and perinatal outcomes in patients with preeclampsia.PloS one · 2025Article
- Prevalence and factors associated with anemia among pregnant women during the COVID-19 pandemic in East Lombok district, Indonesia.PloS one · 2025Observational
- Enhancing diagnostic accuracy for iron deficiency in pregnant women through mean reticulocyte volume.Asia Pacific journal of clinical nutrition · 2024Article
- Hemoglobin concentrations in early pregnancy and their associations with adverse pregnancy outcomes in Western China: a population-based study.BMC pregnancy and childbirth · 2024Article
- A Cost-Utility Analysis of Ferric Derisomaltose Versus Ferric Carboxymaltose in Patients with Iron Deficiency Anemia in China.Advances in therapy · 2024Article
- Prevalence of anemia of varying severity, geographic variations, and association with metabolic factors among women of reproductive age in China: a nationwide, population-based study.Frontiers of medicine · 2024Article
Corrections and comments
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Authors and funding
11 authors at 3 institutions in 2 countries.
Funding
Abstract
backgroundThe current evidence about anemia and iron deficiency anemia (IDA) during pregnancy remains elusive in China. The purpose of this study is to investigate the prevalence of anemia and IDA and their risk factors in Chinese pregnant women.
methodsA nationwide cross-sectional survey of pregnant women was conducted during their antenatal visits. Using a multi-stage sampling method, 24 hospitals from 16 provinces across China were selected. Structured questionnaires were administered to collect information from participants and to extract clinical data from electronic medical records. Mixed-effects logistic regression models were performed to determine the risk factors associated with anemia and IDA.
resultsIn total, 12,403 pregnant women were enrolled, including 1018 (8.2%) at the first trimester, 3487 (28.1%) at the second, and 7898 (63.7%) at the third. Overall, 19.8% of women were diagnosed with anemia and 13.9% were diagnosed with IDA. The prevalence of anemia and IDA varied among regions and increased by gestational month, peaking at the eighth gestational month (24.0% for anemia and 17.8% for IDA). Pregnant women at advanced stage of gestation, non-local residents, multiple gestations, multiparity, pre-pregnancy underweight, and those experiencing severe nausea or vomiting during pregnancy, were associated with higher risks of anemia and IDA.
conclusionsThe prevalence of anemia and IDA during pregnancy are similar to those from developed countries and vary across regions in China.
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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.