Practice Point 1.2: Automated of ce BP (AOBP), either attended or unattended, may be the preferred method of standardized of ce BP measurement. In the opinion of the Work Group, AOBP may increase the likelihood of adherence to proper preparation measures, as the AOBP devices can be programmed to include a rest period. AOBP devices can also automatically take multiple BP measurements and provide an average BP measurement. Thus, BP measured with AOBP can be either attended (i.e., with a healthcare provider in the room) or unattended (i.e., without a provider in the room). Although a recent meta- analysis suggested that unattended AOBP measurements result in lower average BPs than attended measurements,20 the differences were notably small when restricted to studies that randomized the order in which unattended and attended standardized measurements were made.18,21 25 Several large trials, including Systolic Blood Pressure Intervention Trial (SPRINT), Ongoing Telmisartan Alone and in Combination with Ramipril Global Endpoint Trial (ONTARGET), and Action to Control Cardiovascular Risk in Diabetes (ACCORD), used AOBP as the BP measurement method (Figure 3). Of note, the SPRINT protocol did not specify whether AOBP should be performed while attended or unattended. 