Figure 2. Kaplan-Meier curves showing freedom from the primary outcome measure (death due to cardiovascular causes, non-fatal myocardial infarction, non-fatal stroke or hospitalization for congestive heart failure) according to 4 groups: group 1: NT-proBNP < median and PF-4var > median (n = 64); group 2: NT-proBNP < median and PF-4var < median (n = 42); group 3: NT-proBNP > median and PF-4var > median (n = 43); group 4: NT-proBNP > median and PF-4var < median (n = 56).