The instability of blood pressure variability over time.
D000328:Adult; D000368:Aged; D000704:Analysis of Variance; D001794:Blood Pressure; D005260:Female; D006801:Humans; D006973:Hypertension / Q000175:diagnosis / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D013997:Time Factors