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Updated: Jan 17, 2026

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Prevalence, predictors, and patterns of residential mobility by the parents of preterm infants

Daria Murosko1,2,3, Timothy Nelin4,5,6, Priya Sharma7

  • 1Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA. muroskod@chop.edu.

Journal of Perinatology : Official Journal of the California Perinatal Association
|September 17, 2025
PubMed

Insights

Residential mobility, or moving, is common for preterm infants before age 2. Extreme prematurity and neighborhood deprivation increase the likelihood of moving, impacting discharge planning for these vulnerable infants.

Area of Science:

  • Neonatal care and outcomes
  • Pediatric health services research
  • Social determinants of child health

Background:

  • Preterm infants represent a vulnerable population with unique healthcare needs.
  • Residential mobility can disrupt continuity of care and access to resources for families.
  • Understanding factors influencing mobility is crucial for supporting preterm infants' well-being.

Purpose of the Study:

  • To describe the incidence and patterns of residential mobility in preterm infants before two years of age.
  • To identify patient-specific and community-level factors associated with residential mobility in this cohort.
  • To inform strategies for supporting preterm infants and their families experiencing residential changes.

Main Methods:

  • Retrospective cohort study of 9,267 preterm infants within a mid-Atlantic primary care network.
  • Residential mobility defined as a change in Census Block Group.
  • Multivariable regression modeling used to identify associated patient and community factors.

Main Results:

  • 27% of preterm infants (2,494) experienced residential mobility before age two; 6% moved more than once.
  • Extreme prematurity, governmental insurance, male sex, positive/missing postpartum depression screen, and neighborhood deprivation were associated with increased mobility.
  • Mobility was most frequent early in life (30% first moved before 6 months) and decreased with age.

Conclusions:

  • Early-life residential mobility is a significant concern for preterm infants, especially those born extremely preterm.
  • Factors such as prematurity severity and socioeconomic status influence mobility patterns.
  • Findings highlight the need for enhanced discharge planning and support services for mobile preterm infant families.
Abstract

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