TABLE 2.

Linear regression model predicting WML volume in the HTN group at baseline (raw data)

	Variable	Unstandardized coefficient B	Standardized β	P-value
Main effects	Age	0.029	0.28	<0.001
	SBP	−0.07317	−1.81	0.008
Quadratic term	SBP × SBP	0.00030	2.10	0.002

Critical value (Eq. [2]): x = –(−0.07317/(2 × 0.0003)) = 122 mmHg.

HTN, hypertension; WML, white matter lesion.