*3.1. Characteristics*

In a total of 587 neonates, continuous NIRS measurements and a single body temperature measurement within 15 min after birth were performed during the observation period. One neonate had to be excluded due to implausible data. Thus, 586 neonates (99.8%) were included in the present study. All 586 neonates received body temperature measurements, and in 492 neonates (84%), regional oxygen saturation values were available in minute 15 after birth. Four-hundred seventeen neonates (71.2%) were born at term and 169 neonates (28.8%) were born preterm. Demographic data are presented in detail in Table 1. Three-hundred two neonates (51.5%) were male, 50 neonates (8.5%) were twins, and six (1%) were triplets. One-hundred ninety-four neonates (33.1%) required respiratory support, thereof 188 neonates (32.1%) received CPAP and/or PPV, and 13 neonates (2.2%) were intubated during the observation period. Four of the included neonates (0.7%) needed cardiopulmonary resuscitation.


