Correlation structure for acyl-alkyl phosphatidylcholines which were selected by (a) Cox proportional hazards regression analysis by Floegel et al. (3) and (b) random survival forest. Edges represents spearman correlation coefficients adjusted for age, sex, alcohol intake from beverages, smoking, cycling and sports, education, coffee intake, red meat intake, whole-grain bread intake, prevalent hypertension, BMI, and waist circumference. Dotted lines rs = 0 – 0.5, Thin dashed lines rs = 0.5 – 0.75, thick lines rs > 0.75. ae = acyl-alkyl; PC = phosphatidylcholine.