Time to reintervention analysis
Time to reintervention using Kaplan-Meier statistics for the entire
cohort of 309 patients showed 16 events (re-interventions) with freedom
from re-intervention along the span of the study of 17-year was 95 %.
The mean follow-up time was 9.3 years (Figure 3). Survival analysis with
stratification by the sex, surgeon, type of transposition and balloon
atrial septostomy using log-rank statistics showed no significant
differences.