In addition to clinicians, other caregivers and patients who perform BP self-monitoring should be trained to follow the checklist in Table 8. Common errors in clini- cal practice that can lead to inaccurate estimation of BP include failure to allow for a rest period and/or talking with the patient during or immediately before the record- ing, improper patient positioning (eg, sitting or lying on an examination table), rapid cuff deflation (for ausculta- tory readings), and reliance on BPs measured at a single occasion. 4.2. Out-of-Office and Self-Monitoring of BP Recommendation for Out-of-Office and Self-Monitoring of BP References that support the recommendation are summarized in Online Data Supplement 3 and Systematic Review Report. COR LOE Recommendation I ASR 1. Out-of-office BP measurements are recommended to confirm the diagnosis of hypertension (Table 11) and for titration of BP-lowering medication, in conjunction with telehealth counseling or clinical SR indicates systematic review. Synopsis Out-of-office measurement of BP can be helpful for confir- mation and management of hypertension. Self-monitoring of BP refers to the regular measurement of BP by an indi- vidual at home or elsewhere outside the clinic setting. Among individuals with hypertension, self-monitoring of BP, without other interventions, has shown limited evidence for treatment-related BP reduction and achievement of BP However, with the increased recogni- tion of inconsistencies between office and out-of-office BPs (see Section 4.4) and greater reduction in BP being recom- mended for hypertension control, increased attention is being paid to out-of-office BP readings. Although ABPM is generally accepted as the best out-of-office measurement method, HBPM is often a more practical approach in clini- cal practice. Recommended procedures for the collection of HBPM data are provided in Table 10. 