The Association between Early Menarche and Small for Gestational Age Birth

Area of Science:

• Reproductive Health
• Pediatric Health
• Epidemiology

Background:

• Small for gestational age (SGA) births affect approximately 11% of infants in the U.S.
• Known behavioral risk factors for SGA exist, but other contributing factors require exploration.
• Early menarche is a potential, understudied factor influencing birth outcomes.

Purpose of the Study:

• To examine the association between maternal early menarche (before 12 years old) and the occurrence of small for gestational age (SGA) births.
• To identify potential risk factors for SGA beyond established behavioral determinants.
• To contribute to the understanding of early life exposures and their impact on fetal growth.

Main Methods:

• Utilized data from the 2011-2017 National Survey of Family Growth.
• Employed multivariate logistic regression analysis to assess the relationship.
• Controlled for key demographic variables including maternal age, race/ethnicity, and household income.

Main Results:

• Approximately 4% of mothers reported SGA births, and 24% reported early menarche.
• Early menarche showed a non-statistically significant 3% increase in the odds of SGA births (aOR: 1.03, 95% CI: 0.70, 1.53) after adjustments.
• The observed association did not reach statistical significance, suggesting other factors may play a more dominant role.

Conclusions:

• The study did not find a statistically significant link between maternal early menarche and SGA births.
• Further research is warranted to explore the long-term birth outcomes and health consequences associated with early menarche.
• Additional investigation is needed to fully elucidate the complex etiology of SGA births.