Fig. 2

Relationship between various Apos and MACE risk in patients with impaired kidney function who underwent PCI via RCS analysis (ApoA1(A), ApoB(B), and ApoB/ApoA1(C), cutoff values were 0.76, 1.32, and 0.58, P for nonlinear > 0.05). RCS, restricted cubic spline; MACE, major adverse cardiovascular events; HR, hazard ratio; CI, confidence interval; ApoA1, apolipoprotein A1; ApoB, apolipoprotein B