Fig. 1From: Methylmalonic acid, vitamin B12, and mortality risk in patients with preexisting coronary heart disease: a prospective cohort studyThe restricted cubic spline showing the association of MMA with all-cause mortality riskThe restricted cubic spline curve shows the association of MMA and all-cause mortality. Y-axis shows Hazard Ratio estimated by a univariate Cox proportional regression model. The X-axis shows the MMA content (nmol/L). The solid and dashed lines represent point estimates 95% CIs, respectivelyBack to article page