Fig. 2
From: Increased arterial pressure volume index and cardiovascular risk score in China
Relationships between AVI, API and China-PAR score based on Restricted Cubic Spline Functions. a AVI showed a significant U-shaped relationship with the China-PAR score, with AVI values of 5 units associated with the lowest CVD risk score. b There was a significant U-shaped relationship between API and China-PAR scores, with the API value associated with the lowest CVD risk score was 19 units