Multiple standardized clinic blood pressures may predict left ventricular mass as well as ambulatory monitoring: A metaanalysis of comparative studies

It is generally recognized that the relation between left ventricular mass (index) and blood pressure measured in the clinic is weak. Several investigators have studied whether ambulatory blood pressure outside the hospital environment can explain more of the variance of left ventricular mass than does clinic pressure. In a metaanalysis of such comparative studies, the weighted correlation coefficient averaged 0.35 (95% confidence limits: 0.30 to 0.40) for systolic clinic pressure and was significantly ( P