After the participants underwent randomization,
their baseline antihypertensive regimens
were adjusted on the basis of the study-group
assignment. The treatment algorithms were similar
to those used in the Action to Control Cardiovascular
Risk in Diabetes (ACCORD) trial.22
These algorithms and our formulary are listed in
Figures S1 and S2 and Table S1 in the Supplementary
Appendix. All major classes of antihypertensive
agents were included in the formulary
and were provided at no cost to the participants.
SPRINT investigators could also prescribe other
antihypertensive medications (not provided by
the study).