The persistence of elevated blood pressure first observed at age five.
D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D006973:Hypertension / Q000175:diagnosis* / Q000453:epidemiology; D008297:Male; D009864:Ontario; D012737:Sex Factors; D013223:Statistics as Topic