Does anyone know the statistic of the average amount of time a child with cancer spends in the hospital?

I am also trying to find an estimate of how many treatments the average child with cancer has to undergo in a life time. I'm sure it varies depending upon if the disease relapses or not, but i'm trying to find such statistics for a presentation on pediatric oncology. I want to relate to the psychological toll that the disease takes on a child as a result of spending so much time going through treatments.