Table 1.

Main characteristics of selected studies using ambulatory blood pressure monitoring

	Patients		MUCH Definition	FU (years)	Events		Type of Event
Study	CH	MUCH			CH	MUCH
OvA Study 2003⁷	146	143	Day BP≥135/85 mmHg	5	7	9	Fatal/Nonfatal CVE
Chieti-Pescara Study 2005–2017^10,26	523	215	Day BP≥135/85 mmHg	10	79	69	Fatal/Nonfatal CVE
IDACO Study 2005–2017^{9,12,13,15,18,19,23}	528	236	Day BP≥135/85 mmHg	11	147	93	Fatal/Nonfatal CVE
Hadassah Study 2008¹⁶	360	268	Day BP≥135/85 mmHg	7.7	23	29	All-Cause Mortality
Jackson Heart Study 2016²⁴	272	135	Day BP≥135/85 mmHg	8.2	16	22	Fatal/nonfatal CVE
Spanish Registry Study²⁸	7406	2378	Day BP≥135/85 mmHg	4.7	273	166	All-Cause Mortality

BP, blood pressure; CH, controlled hypertension; CVE, cardiovascular events (stroke, coronary artery disease, heart failure and peripheral revascularization for OvA, Chieti-Pescara and IDACO Studies; stroke and coronary artery disease for Jackson Heart Study); FU, follow-up (mean); IDACO, International Database on Ambulatory blood pressure in relation to Cardiovascular Outcomes; MUCH, masked uncontrolled hypertension; OvA, Office versus Ambulatory pressure. Data of the OvA, IDACO, Hadassah and Spanish Registry Studies are provided by the authors. Data of the Chieti Pescara Study, provided by the authors, come from the overall database of treated hypertensive patients at baseline (2264 patients) which includes patients aged≥60 years reported in Ref. 26, those aged < 60 years reported in Ref. 10 and other patients aged < 60 years of the database (data of patients aged≥and < 60 years are equally updated to 2013); the cutoff of daytime BP to define MUCH was chosen for homogeneity with other studies. Data of the Jackson Heart Study are published data. Daytime BP recording interval: OvA Study (30 minutes), Chieti-Pescara Study (15 minutes), IDACO Study (15–30 minutes), Hadassah Study (20 minutes), Jackson Heart Study (20 minutes) and Spanish Registry Study (20 minutes).