Risk for Child Maltreatment Among Infants Discharged From a Neonatal Intensive Care Unit: A Sibling Comparison

Area of Science:

• Neonatal Intensive Care Unit (NICU) outcomes
• Child Maltreatment (CM) risk factors
• Epidemiological study design

Background:

• Previous studies suggest a link between neonatal illness and increased risk for child maltreatment (CM).
• These associations may be confounded by social, family, maternal characteristics, and increased healthcare surveillance.
• Controlling for these biases is crucial for accurate risk assessment.

Purpose of the Study:

• To examine the association between neonatal intensive care unit (NICU) admission and subsequent child maltreatment (CM) risk.
• To control for potential confounding factors and increased healthcare provider surveillance.
• To investigate the temporal and demographic patterns of CM risk following NICU stays.

Main Methods:

• Sibling discordance retrospective cohort study design comparing NICU-born infants with their non-NICU-born siblings.
• Cox proportional hazard models with shared frailty terms to analyze time to CM event, accounting for clustering.
• Directed acyclic graph approach for covariate selection and systematic inclusion/exclusion of surveillance reports.

Main Results:

• Controlling for biases reduced, but did not eliminate, the association between neonatal illness and CM report risk.
• The risk of CM was significantly elevated during the first year after NICU infant's birth.
• Increased CM risk was particularly noted in families with multiple known CM risk factors.

Conclusions:

• Neonatal intensive care unit (NICU) admission remains a risk factor for child maltreatment (CM) reports, even after rigorous bias control.
• The heightened risk period is concentrated in the initial year post-NICU discharge.
• Families with pre-existing vulnerabilities face a disproportionately higher risk, underscoring the need for targeted support.