The following information is from a Brief on "Adverse Childhood Effects" Study sponsored by the Oklahoma Institute for Child Advocacy...
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domestic violence: state level findings
In 2004 in Oklahoma, over 24,500 domestic violence cases were reported to Oklahoma law enforcement agencies, reflecting a 32% increase since 1993. Experts indicate that only 50% of intimate partner violence incidents are reported. Oklahoma ranks 7th nationally in the number of females murdered by males, with 92% of the perpetrators being known by the victim.
As of January 2006, the Oklahoma Domestic Violence Fatality Review Board had reviewed 170 of the 359 domestic violence death cases that occurred from 1998 to 2002. They found that almost 40% of the victims had children with the perpetrator, and 46% had children with another partner.