Injury during pregnancy and nervous system birth defects: Texas, 1999 to 2003

Area of Science:

• Obstetrics and Gynecology
• Neonatal Health
• Epidemiology

Background:

• Previous case reports suggest a link between pregnancy injury and adverse fetal/neonatal outcomes.
• The specific association between maternal injury during pregnancy and infant nervous system birth defects requires further investigation.

Purpose of the Study:

• To determine if injury during pregnancy is associated with nervous system birth defects in infants.
• To analyze the relationship using a large-scale registry.

Main Methods:

• A case-control study design was employed.
• Data was sourced from the Texas Birth Defects Registry (1999-2003).
• Semiautomated probabilistic bias analysis was utilized to mitigate systematic error.

Main Results:

• A total of 59,750 infants were analyzed.
• 6.94% of infants had nervous system birth defects; 0.53% of mothers experienced injury during pregnancy.
• No significant association was found between injury during pregnancy and nervous system birth defects (adjusted odds ratio = 1.00).
• A notable association was observed among infants with breech presentation (adjusted odds ratio = 2.44).

Conclusions:

• Overall, no association was identified between injury during pregnancy and nervous system birth defects.
• Further research is recommended to explore the potential association in breech presentation infants.