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Related Experiment Videos

Maternal age and placenta previa: a population-based, case-control study

J Zhang1, D A Savitz

  • 1Carolina Population Center, University of North Carolina, Chapel Hill 27599-7400.

American Journal of Obstetrics and Gynecology
|February 1, 1993
PubMed
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Advanced maternal age increases placenta previa risk. Women aged 34 and older face a two to three times higher risk, independent of other factors, showing a clear dose-response pattern with increasing age.

Area of Science:

  • Obstetrics and Gynecology
  • Reproductive Health
  • Perinatal Epidemiology

Background:

  • Placenta previa is a significant obstetric complication.
  • Understanding risk factors for placenta previa is crucial for improved maternal and fetal outcomes.
  • Advanced maternal age is a known risk factor for various pregnancy complications.

Purpose of the Study:

  • To investigate the independent association between advanced maternal age and placenta previa.
  • To determine if maternal age remains a risk factor for placenta previa after accounting for other established risk factors.

Main Methods:

  • A population-based, case-control study design was employed.
  • Data were sourced from North Carolina vital records spanning 1988-1990.
  • Controls were individually matched to cases based on key demographic and obstetric variables.

Related Experiment Videos

Main Results:

  • Multivariate analysis revealed a 2-3 fold increased risk of placenta previa in women aged 34 years or older compared to women under 20.
  • A significant dose-response relationship was observed, with risk escalating with advancing maternal age.
  • The association between advanced maternal age and placenta previa persisted after controlling for other risk factors.

Conclusions:

  • Advanced maternal age is an independent risk factor for developing placenta previa.
  • The findings highlight the importance of considering maternal age in risk assessment for placenta previa.
  • This study reinforces the need for enhanced prenatal surveillance in older mothers.