Figure 1.

Kaplan-Meier plot for the acquisition of free running in children with congenital cardiac disease. The acquisition of free running is delayed in children with congenital cardiac disease (median time: 16 months. 95% confidence interval: 15;18 months. Interquartile range: 5 months) compared with children without (median time: 12 months. 95% confidence interval: 12;13 months. Interquartile range: 4 months). Vertical bars indicate standard errors. No censored cases were observed within 30 months of follow-up.