- Eligible participants had systolic blood pressure (BP) of 120 to 159 mm Hg or a diastolic blood pressure of 80 to 99 mm Hg. This range includes participants with prehypertension (systolic, 120-139 mm Hg or diastolic, 80-89 mm Hg) and stage 1 hypertension (systolic, 140-159 mm Hg or diastolic, 90-99 mm Hg).