Domestic Violence More Common Among Same-Sex Couples

On analyzing the previous studies together, it was observed that domestic violence affected 25 percent - 75 percent of the lesbian, gay and bisexual individuals. Lack of representative data and underreporting of abuse represent an incomplete picture indicating the rates could be higher. It is, however, estimated that 1 in 4 heterosexual women are victims of domestic abuse and the rate is much lower in heterosexual men.

http://www.scienceworldreport.com/articles/17286/20140920/domestic-violence-more-common-among-same-sex-couples.htm