Fig. 1: Consort table of inclusion and exclusion criteria.

Regional network refers to the infant referred within the Trent Perinatal and Central Neonatal Network. Three groups for comparison defined: (1) BasePass/TransportPass (passive therapeutic hypothermia (TH) by both the referring centre and Transport team), (2) BasePass/TransportAct (passive TH by referring centre and Active TH by transport team), (3) BaseAct/TransportAct (active TH by both referring centre and Transport team). *Infants did not meet the definitions of the final predefined groups for comparison.