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Related Experiment Videos

Spontaneous preterm birth: a case-control study.

I de Haas1, B L Harlow, D W Cramer

  • 1Obstetrics and Gynecology Epidemiology Center, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115.

American Journal of Obstetrics and Gynecology
|November 11, 1991
PubMed
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Prior preterm delivery, smoking, and low prepregnancy weight are key risk factors for preterm birth. Maternal diethylstilbestrol exposure and prior induced abortions also increase risk.

Area of Science:

  • Obstetrics and Gynecology
  • Reproductive Health
  • Epidemiology

Background:

  • Preterm delivery is a significant concern in maternal and infant health.
  • Understanding risk factors is crucial for prevention strategies.

Purpose of the Study:

  • To identify demographic, lifestyle, and medical history factors associated with preterm delivery.
  • To quantify the risk associated with identified factors.

Main Methods:

  • Case-control study involving 140 women with preterm delivery and 280 controls with term delivery.
  • Data collected from prenatal records, including demographic, lifestyle, and medical history.
  • Logistic regression analysis used to control for confounding variables.

Main Results:

Related Experiment Videos

  • Increased risk of preterm delivery associated with prior preterm delivery (RR 3.5), smoking during pregnancy, and prepregnancy weight < 61.5 kg (RR 2.0).
  • Maternal diethylstilbestrol exposure was significantly associated with preterm delivery (p < 0.001).
  • History of induced abortion showed a modest increased risk, escalating with the number of procedures (p=0.02 for trend).

Conclusions:

  • Identified risk factors for preterm birth include previous preterm delivery, smoking, low prepregnancy weight, maternal DES exposure, and history of induced abortions.
  • These findings can inform targeted interventions and public health initiatives to reduce preterm birth rates.