Group Prenatal Care Reduces Risk of Preterm Birth and Low Birth Weight: A Matched Cohort Study

Shayna D Cunningham1, Jessica B Lewis1, Fatma M Shebl1

  • 11 Yale School of Public Health, New Haven, Connecticut.

Insights

Group prenatal care significantly reduces the risk of preterm birth and low birth weight. Increased participation in group prenatal care (≥5 visits) further enhances these positive birth outcomes.

Area of Science:

  • Maternal-Fetal Medicine
  • Public Health
  • Healthcare Delivery Models

Background:

  • Group prenatal care is a recognized strategy for improving perinatal outcomes.
  • Research gaps exist regarding its effectiveness in diverse populations and the impact of patient adherence.
  • This study investigates group prenatal care's effect on preterm birth and low birth weight, considering adherence.

Purpose of the Study:

  • To evaluate the impact of group prenatal care on preterm birth and low birth weight.
  • To analyze outcomes in a large, metropolitan hospital setting over an 8.5-year period.
  • To account for patient adherence in assessing the effectiveness of group prenatal care.

Main Methods:

  • Analysis of data from 9,348 women with live, singleton births from January 2009 to June 2016.
  • Comparison of group (CenteringPregnancy, Expect With Me) versus individual prenatal care.
  • Propensity score matching and Poisson regression to estimate risks of preterm birth and low birth weight.

Main Results:

  • Group prenatal care was associated with a significantly lower risk of preterm birth (RR 0.63) and low birth weight (RR 0.62) compared to individual care.
  • Women attending ≥5 group prenatal care visits showed substantially greater risk reductions: 68% for preterm birth and 66% for low birth weight.
  • These findings were adjusted for individual visit frequency.

Conclusions:

  • Group prenatal care participation is linked to improved birth outcomes.
  • Health systems should consider promoting the adoption and sustainability of group prenatal care models.
  • Further research may explore optimal adherence levels and diverse population impacts.
Abstract

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