From: Association between brachial-ankle pulse wave velocity and progression of coronary artery calcium: a prospective cohort study
Characteristics
PWV quartiles
P for trend
Q1 (NÂ =Â 281)
Q2 (NÂ =Â 281)
Q3 (NÂ =Â 282)
Q4 (NÂ =Â 280)
Amount of interval change
<0.001
 No interval change
232
219
184
171
 1–9
117
19
33
31
 10–99
29
38
59
60
 ≥100
3
5
6
18