Table 2:

Summary of the correlation and regression (adjusted for age, sex and antihypertensive medication) analyses evaluating the effect of MAP on cerebral hemodynamics across age groups.

		Spearman’s correlation		Linear regression
Age groups	Dependent variable	ρ	p value	Beta	B (SE)	p value
Young group	Gray matter CBF	−0.180	0.001	−0.101	−0.001 (0.000)	0.040
	White matter CBF	0.011	0.841	−0.012	−0.000 (0.000)	0.834
	Gray matter ATT	0.083	0.120	−0.016	0.000 (0.000)	0.741
	White matter ATT	0.044	0.411	−0.018	0.000 (0.000)	0.713
Younger-old group	Gray matter CBF	−0.295	<0.001	−0.271	−0.002 (0.001)	<0.001
	White matter CBF	−0.204	0.002	−0.241	−0.002 (0.000)	<0.001
	Gray matter ATT	0.130	0.053	0.032	0.000 (0.000)	0.598
	White matter ATT	0.125	0.064	0.085	0.000 (0.000)	0.185
Oldest-old group	Gray matter CBF	−0.284	0.005	−0.176	−0.002 (0.001)	0.079
	White matter CBF	−0.232	0.024	−0.177	−0.001 (0.001)	0.089
	Gray matter ATT	0.119	0.249	0.095	0.000 (0.000)	0.334
	White matter ATT	0.022	0.834	−0.002	0.000 (0.000)	0.981

The dependent variables were log transformed in linear regression models, which include age, sex, anti-hypertensive use and MAP as independent variables. ρ= Spearman’s rho correlation coefficient. Beta and B represent standardized and unstandardized coefficients, respectively. SE=Standard error.