The Fourth National Incidence Study of Child Abuse and Neglect for US Congress in 2010 found the following (page 164):
A child living with a parent and a non biological partner was:
10 times more likely to suffer physical abuse
17 times more likely to suffer sexual abuse
8 times more likely to suffer emotional abuse
A child living with one parent and no partner was:
3 times more likely to suffer physical abuse
5 times more likely to suffer sexual abuse
3 times more likely to suffer emotional abuse
PARENTS
According to a study by Weitoft and others, mothers who are living alone without their children have a 20 % higher incidence of death from Ischaemic heart disease and 250% higher incidence of suicide.
Fathers who are living alone without their children have a 290 % higher incidence of death from Ischaemic heart disease and 460 % higher incidence of suicide. Because many more mothers than fathers end up with sole custody it is likely that hundreds of fathers a year are dying because of our modern Family Law practices.