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Figure 3 Kaplan-Meier freedom of pacemaker implantation comparing fetal, neonatal and childhood diagnosis of CAVB. Global differences between the groups (log-rank; ² = 28.4, p < 0.001) were further analyzed using log-rank tests and Bonferroni corrections. Time of implantation differed significantly between the childhood group and the neonatal group (² = 7.8, p = 0.02) and between the childhood group and the fetal group (² = 33.9, p < 0.001) but not between the neonatal and fetal groups (² = 4.4, p = 0.09) after adjustment for multiple comparison.