Estimates the incidence of 5 categories of children, those who were: abducted by family members; abducted by non-family members; runaways; thrownaways; and missing because they had gotten lost or injured, or for some other reason. Data was collected from 6 separate sources: household survey; juvenile facilities survey; returned runaway study; police records study; FBI data reanalysis; and community professionals study. Charts, tables and graphs.