Table 1

Mean Difference Between OBP30 and OBP Stratified by Reason to Request OBP30

Reasons to request OBP30	N^b	Difference Between OBP and OBP30^a
Reasons to request OBP30	N^b	Systolic (mm Hg)	Diastolic (mm Hg)
Suspected white-coat hypertension	75	29.6 (25.1–34.7)	14.4 (11.8–16.9)
New diagnosis of hypertension	42	19.7 (14.6–24.8)	10.8 (7.5–14.2)
Inconsistent office readings	23	22.3 (14.5–30.4)	11.4 (7.2–15.2)
To monitor medication effect	62	20.1 (15.0–25.8)	9.9 (7.6–12.4)
Suspected therapy resistance	13	28.4 (15.5–40.4)	8.2 (4.1–12.2)
Suspected episodes of hypotension	4	21.8 (11.5–37.0)	16.8 (13.5–21.5)
Other	7	13.7 (4.3–24.0)	7.7 (0.1–13.9)

OBP30 = automated office blood pressure monitoring during 30 minutes; OBP = office blood pressure.
↵a OBP minus OBP30.
↵b Multiple reasons may apply for a single patient.