Table 1. Average cross-validated β-values and relative t-scores and p-values estimated through GLM in SA prediction.

Normalized (z-scored) regressor	β-value	t-stat	p-value
ABP	0.2358	3.345	0.001
LF/HF	0.3176	4.080	1∙10−4
RMSSD	0.3042	3.544	7∙10−4
GENDER	−0.3947	−4.284	6∙10−5