Five-year report of a multicenter controlled clinical trial of open versus endovascular treatment of abdominal aortic aneurysms

Curves show the time-related accumulation of major adverse events (MAE) within the control (dashed) and test (solid) groups estimated by the Nelson nonparametric method. Through the 60-month follow-up period, the total mean cumulative MAE for control subjects was 3.2 events/subject compared with test subjects with 2.4 events/subject.

Mean cumulative function (MCF) difference in major adverse events (MAE) between test and control groups. Error bars represent 95% confidence limits.

Kaplan-Meier curves show overall survival in both control (dashed) and test (solid) groups. Over the 60-month follow-up period, the survival difference is not statistically significant (P = .12). Also shown is the number of patients at risk in each population at annual increments over 5 years.

Curves show percentage of patients in control (dashed) and test (solid) groups free from aneurysm-related mortality. Over the 60-month follow-up period, the aneurysm-related survival difference is not statistically different (P = .8). Also shown is the number of patients at risk in each population at annual increments over 5 years.

Curves show percentage of patients in control (dashed) and test (solid) groups free from major adverse events (MAE). Over the 60-month follow-up period, the freedom from MAE is significantly greater for the test group compared with the control group (P < .001). Also shown is the number of patients at risk in each population at annual increments over 5 years.