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Pregnancy complications among nulliparous and multiparous women with advanced maternal age: a community-based prospective cohort study in China

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Abstract

Background: This study aimed to evaluate the incidence rates and risks of pregnancy complications among nulliparous and multiparous women with advanced maternal age (AMA, ≥35 years) in China. Methods: We performed a community-based prospective cohort study of 10,171 pregnant women in selected two sub-districts and 11 towns of Liuyang from 2013 to 2015. All subjects were followed up from the first prenatal care (at ≤12 weeks) to delivery, and risks of pregnancy complications were compared by parity and maternal age groups. Results: Among nulliparas, women with AMA showed significantly increased risks for gestational hypertension (OR 8.44, 95%CI 1.68–2.88), preeclampsia/eclampsia (OR 9.92, 95%CI 4.87–18.78), premature rupture of membrane (OR 6.84, 95%CI 2.00–17.69), as compared to women in the 20–29-year age group. Among multiparas with AMA, increased risks were found for gestational diabetes mellitus (OR 3.29, 95%CI 1.76–5.94), anemia (OR 1.85, 95%CI 1.25–2.69), polyhydramnios (OR 3.29, 95%CI 1.56–6.64), premature rupture of membrane (OR 5.14, 95%CI 2.12–12.29), and preterm labor (OR 1.89, 95CI 1.42–2.50). Conclusions: Women with AMA were associated with increased risks of pregnancy complications, and complications with increased risks differed in nulliparas and multiparas. Women with AMA should be identified as a high-risk group in clinical practice.

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Metadata

Authors
Luo, J., Fan, C., Luo, M., Fang, J., Zhou, S., & Zhang, F.
Affiliations
  • Central South University (CN)
  • Hubei Provincial Women and Children's Hospital (CN)
  • Hunan Provincial Maternal and Child Health Hospital (CN)
  • Liuyang City Maternal and Child Health Hospital (CN)
Corresponding author
Luo, Miyang
Venue
BMC Pregnancy and Childbirth
Published
2020-10-02
Volume
20
Issue
1
Pages
581-581
ISSN
1471-2393 (ISSN-L)
OpenAlex
W3091511291
Cited by
60
References
36
Citations by year
2026: 6 · 2025: 9 · 2024: 10 · 2023: 14 · 2022: 8 · 2021: 12 · 2020: 1
FWCI
5.34
Type
journal article
Language
en
Open access
Licence
Locations
  • BMC Pregnancy and Childbirth (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
National Natural Science Foundation of China (81172680)
Topics
  • Health Sciences › Medicine › Obstetrics and Gynecology › Maternal and Perinatal Health Interventions
  • Health Sciences › Medicine › Obstetrics and Gynecology › Pregnancy and preeclampsia studies
  • Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Maternal and Neonatal Healthcare
Keywords
advanced maternal age, pregnancy complications, nulliparous women, multiparous women, parity, gestational hypertension, preeclampsia, premature rupture of membranes, gestational diabetes mellitus, anemia in pregnancy, polyhydramnios, preterm labor, high-risk pregnancy
MeSH terms
Adult, Birth Weight, Cesarean Section, China, Female, Follow-Up Studies, Humans, Infant, Newborn, Maternal Age, Parity, Pregnancy, Pregnancy Complications, Prospective Studies, Rural Population, Urban Population, Premature Birth, Young Adult

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CoChat. (2026). Citation check: Pregnancy complications among nulliparous and multiparous women with advanced maternal age: a community-based prospective cohort study in China. https://app.cochat.ai/papers/10.1186/s12884-020-03284-1
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Luo, J., Fan, C., Luo, M., Fang, J., Zhou, S., & Zhang, F. (2020). Pregnancy complications among nulliparous and multiparous women with advanced maternal age: a community-based prospective cohort study in China. BMC Pregnancy and Childbirth. https://doi.org/10.1186/s12884-020-03284-1

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