Fig. 3

Kaplan–Meier curve of overall survival with a median survival of 2 years. The red shaded area represents the 95% confidence interval. The median survival was 2 years. The x-axis shows age in years and the table below the axis shows the number of patients at risk for an event. The y-axis indicates the cumulative survival to specific age. Each drop in the curve represents a death. The vertical lines along the curve indicate that a child was censored while still living (either because they received UCBT or that they were still living at the cutoff date of 11/01/2018). The cumulative probability is calculated as the product of the interval probabilities up to the age of the event. The denominator for the calculation of the interval probability is the number of children at risk at the time of the event. Children who are censored while living do not contribute to the denominator for the next event