The vast majority of missing children are "
runaways or throwaways". The majority are not abducted or kidnapped. But runway due to girlhood-paternal-sexual-abuse or girlhood-physical-abuse/boyhood-physical-abuse. Or were throw-away by their parents to the streets.
The majority of children abducted or kidnaped are pre-pubescent young-children, equally both girls and boys, taken by other members of their family. The family-member(s) abduct the young-child out of anger or revenge.
However, regarding non-familial child-abduction the victims are 73% girls, according to the U.S. F.B.I. in 2010. Nearly two-thirds. With boys as victims of child-abduction/kidnapping 27% of the time. However, there is a large gender-disparity on the reasons for abduction versus the kidnapping. According to the F.B.I., girls are abducted usually for sexual-reasons, while boys are kidnapped for financial-related reasons. Also according to the F.B.I., victims of acquaintance-abduction tend to be adolescent-girls abducted by men or adolescent-boys. While victims of stranger-abduction tend to be pre-pubescent girls under the age of 10. With stranger-abduction victims more likely to be toddler-girls.