Associations of Newborn Social Risk Factors With High Infant Weight‐for‐Length at Age 6 Months: Observational Clinical Cohort

Obesity (Silver Spring)Published Longitudinal observational cohort study

Authors' conclusion

Newborn utility hardship was associated with obesity risk at age 6 months. Interventions to address newborn social risk factors should examine the effectiveness of utility shutoff protection to reduce excess infant weight gain.

Study context

Population
Newborns with a primary care social risk screening questionnaire, New York City; 77.3% Hispanic/Latino, 96.6% Medicaid
Participants
1,876 newborns
Exposure
Newborn social risk factors vs none
  • Utility hardshipn = 110
  • Food insecurityn = 355
  • Housing instabilityn = 149
  • Transportation problemsn = 132
Outcome
High weight-for-length (WFL; 97.7th percentile)
Follow-up
6 months
Methodological detailselectronic health record data
  • Electronic health record data

Main finding

As reported in the abstract

High WFL
Utility hardshipEstimate (95% CI)
Unadjusted
OR 3.0(1.8–5.2)
Adjusted for infant, parent and social risk factors
aOR 3.1(1.7–5.6)

Observational data: associations, not effects.

Original publication

Associations of Newborn Social Risk Factors With High Infant Weight‐for‐Length at Age 6 Months: Observational Clinical Cohort. Obesity (Silver Spring). Published 15 December 2025. doi:10.1002/oby.70088

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