Table 2.

Pearson’s correlation between iICP and nICP in relation to K1 and K2 (Isomap), TTP, P2/P1, and P2/P1 × TTP

	K1	K2	TTP	P2/P1	P2/P1 × TTP
ρ	0.312	0.491	− 0.013	0.525	0.173
MI	0.444	0.653	0.694	0.366	0.751

ρ ranges from − 1 to + 1, with zero unrelated between the variables and the extremes as perfect correlations

MI, mutual information normalized boo from 0 to 1 with 1 being a perfect correlation

TTP, time to peak; iICP, invasive intracranial pressure; nICP, noninvasive intracranial pressure

Highlighted are the correlations considered strong

In bold correlations considered strong