Table 2.

Classification of blood pressure1

Category	Systolic bloodpressure (mmHg)	Diastolicblood pressure (mmHg)
Normal	< 120 and	< 80
Prehypertension	120–139 or	80–89
Hypertension,stage 1	140–159 or	90–99
Hypertension,stage 2	≥ 160 or	≥ 100