Outcome events in patients with claudication: A 15-year study in 2777 patients

Kaplan-Meier survival curves for study cohort (solid line ) and for age-adjusted healthy US male population (dotted line ). A 95% CI is shown for study cohort survival curve.

Kaplan-Meier curves showing probability of freedom from selected limb-related events: minor amputation, major amputation, and surgical revascularization.

Predicted 2-year mortality rate of male claudicants as a function of risk score (computed with point system shown in Table III). A 95% CI is shown for mortality estimate. Figure also shows raw 2-year mortality rate for our study cohort, as a function of risk score (closed circles ). Number of patients with risk scores of 12 and 13 is small, so raw 2-year mortality data points for these scores should be interpreted with caution.