Figure 1. Eligibility, Randomization, and Follow-up for Systolic Blood Pressure (SBP) Intervention Trial (SPRINT) Participants Aged 75 Years or Older.
aSystolic blood pressure was required to be between 130 mm Hg and 180 mm Hg for participants taking 0 or 1 medication, 130 mm Hg to 170 mm Hg for participants taking 2 medications or fewer, 130 mm Hg to 160 mm Hg for participants taking 3 medications or fewer, and 130 mm Hg to 150 mm Hg for participants taking 4 medications or fewer.
bIncreased cardiovascular risk was defined as presence of 1 or more of the following: (1) clinical or subclinical cardiovascular disease other than stroke, (2) chronic kidney disease (defined as an estimated glomerular filtration rate of 20 mL/min/1.73m2 to 59 mL/min/1.73m2 based on the 4-variable Modification of Diet in Renal Disease equation and the latest laboratory value within the past 6 months), (3) Framingham risk score for 10-year cardiovascular risk of 15% or greater based on laboratory work done within the past 12 months for lipids, or (4) age of 75 years or older.