Figure 2From: The reliability of the ankle-brachial index in the Atherosclerosis Risk in Communities (ARIC) study and the NHLBI Family Heart Study (FHS) Bland-Altman plot showing the reproducibility of the ankle systolic blood pressure. The differences between the first and second measurements are plotted against the mean of the two measures with 95% limits of agreement (solid lines) and regression line (dashed line).Back to article page