Etiological Subgroups of Small-for-Gestational-Age: Differential Neurodevelopmental Outcomes

Xiuhong Li1,2, Rina D Eiden3, Leonard H Epstein2

  • 1Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou, Guangdong 510080, China.

Plos One
|August 9, 2016
PubMed

Insights

Children born small-for-gestational-age (SGA) with multiple births or singleton SGA with smoking and inadequate weight gain show poorer 5-year cognitive outcomes. These findings highlight critical risk factors impacting neurodevelopment in SGA populations.

Area of Science:

  • Pediatric Neurodevelopment
  • Public Health
  • Perinatal Epidemiology

Background:

  • Neurodevelopmental outcomes in children born small-for-gestational-age (SGA) exhibit significant variability.
  • Understanding the etiological factors contributing to these variations is crucial for targeted interventions.

Purpose of the Study:

  • To prospectively compare 5-year neurodevelopmental outcomes across different etiological subgroups of small-for-gestational-age (SGA) children.
  • To identify specific prenatal risk factors associated with poorer cognitive development in SGA populations.

Main Methods:

  • Utilized data from the U.S. Early Childhood Longitudinal Study-Birth Cohort (N=1050 SGA children).
  • Categorized SGA children into etiological subgroups based on 7 established prenatal risk factors.
  • Employed linear regression models to assess 5-year reading, math, gross motor, and fine motor scores, adjusting for socio-demographic confounders.

Main Results:

  • Multiple-birth SGA subgroups demonstrated lower mean reading and math scores compared to singleton SGA subgroups.
  • Cognitive disadvantages in multiple-birth SGA subgroups were pronounced in those without ovulation stimulation.
  • Singleton SGA subgroups with co-occurring maternal smoking and inadequate gestational weight gain (GWG) showed significantly lower reading and math scores.

Conclusions:

  • Multiple-birth SGA and singleton SGA with combined smoking and inadequate GWG are associated with poorer cognitive development up to age 5.
  • These findings underscore the importance of considering multiple risk factors when assessing neurodevelopmental trajectories in SGA children.
  • Intervention strategies may need to be tailored to specific etiological subgroups of SGA infants to improve long-term outcomes.
Abstract

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