Table 2. Correlation within infants (ANCOVA) between Coherence (Coh, MABP with TOI) and Blood pressure variability (BPV) for postnatal days 1, 2 and 3.

Postnatal days	Number of infants (N)	MABP (mmHg, mean±SD)	TOI (%, mean±SD)	ANCOVA between Coh and BPV R2 p-value
D1	29	32.4 (±4.3)	63.4 (±5.8)	0.12 0.03*
D2	26	33.4 (±4.1)	64.8 (±7.0)	0.01 0.28
D3	23	35.1 (±5.3)#	66.3 (±5.2)	0.19 0.01*

^*p<0.05.

^#p<0.05 compared to D1.