The goal of the Tiny Baby Collaborative Multicenter Inventory of Neonatal-Perinatal Interventions (MINI) minimum dataset is to serve as a registry detailing the outcomes and practices for all deliveries and infants admitted to intensive care at 22-23 weeks' gestation at participating hospitals.

The minimum dataset collects observational baseline data on both mothers and infants, and the therapies used and outcomes of the infants. The data collected include information on:

• Demographics of mother and infant
• Mother's health, labor and delivery
• Infant's health, medical interventions, and clinical outcomes

These data are used to: provide participating hospitals with reporting for use in quality improvement; evaluate associations between baseline characteristics, treatments, and outcomes; and track trends in disease and therapy.

Inclusion Criteria:

• All local births with gestational ages of 22 weeks 0 days - 23 weeks 6 days, regardless of pregnancy outcome or neonatal intensive care (NICU) admission; AND
• All outborn NICU admissions with gestational age at birth of 22 weeks 0 days - 23 weeks 6 days
• Optional: Centers who desire to include data for NICU admissions of infants born <22 weeks' gestation may also submit these data.

Participating hospitals