Sixth, because of the structure of the NCANDS data, we were not able to estimate differences in the cumulative prevalence of different types of maltreatment (such as neglect, physical abuse, and sexual abuse), as is common in much research in this area, 20,21 because doing so would have involved using a multiple decrement life table for a birth cohort and made it possible for us to consider cumulative prevalences only to age eight rather than age eighteen.
