Figure 1
From: Pulse wave velocity and carotid atherosclerosis in White and Latino patients with hypertension
Relationship of pulse wave velocity to carotid intima media thickness. The relationship between the inverse of the brachial-ankle pulse wave velocity (PWV) in cm/second and the carotid intima media thickness in mm. P-inverse is - (1/PWV) - 0.0006)/0.00011). The resulting Z (P-inverse) quantity has a mean of 0 and an SD of 1. The negative sign is used to ensure that correlations with PWV retain the same direction when compared to P-inverse.