Skip to main content

Table 4 Multivariate between-visit covariance matrices for ankle and arm systolic blood pressures estimated in reliability study subjects

From: The reliability of the ankle-brachial index in the Atherosclerosis Risk in Communities (ARIC) study and the NHLBI Family Heart Study (FHS)

 

Ankle SBP

Arm SBP

Within-person covariance

  

   Ankle SBP

213.6

88.3

   Arm SBP

88.3

116.2

True/total ratio matrix

  

   Ankle SBP

0.682

0.741

   Arm SBP

0.741

0.736