The 2006 thirty-two nation International Dating Violence Study "revealed an overwhelming body of evidence that bidirectional violence is the predominant pattern of perpetration; and this ... indicates that the etiology of ipv is mostly parallel for men and women". The survey found for "any physical violence", a rate of 31.2%, of which 68.6% was bidirectional, 9.9% was perpetrated by men only, and 21.4% by women only. For severe assault, a rate of 10.8% was found, of which 54.8% was bidirectional, 15.7% perpetrated by men only, and 29.4% by women only.[57]
... the 1975 U.S. National Family Violence Survey carried out by Murray A. Straus and Richard J. Gelles on a nationally representative sample of 2,146 "intact families". The survey found 11.6% of women and 12% of men had experienced some kind of intimate partner violence in the last twelve months, also 4.6% of men and 3.8% of women had experienced "severe" intimate partner violence.
A study conducted in 2007 by Daniel J. Whitaker, Tadesse Haileyesus, Monica Swahn, and Linda S. Saltzman, of 11,370 heterosexual U.S. adults aged 18 to 28 found that 24% of all relationships had some violence. Of those relationships, 49.7% of them had reciprocal violence. In relationships without reciprocal violence, women committed 70% of all violence.
The 2001 National Longitudinal Study of Adolescent Health found that 49.7% of intimate partner violence cases were reciprocal and 50.3% were non-reciprocal. When data provided by men only was analyzed, 46.9% of cases were reported as reciprocal and 53.1% as non-reciprocal. When data provided by women only was analyzed, 51.3% of cases were reported as reciprocal and 49.7% as non-reciprocal. The overall data showed 70.7% of non-reciprocal intimate partner violence cases were perpetrated by women only (74.9% when reported by men; 67.7% when reported by women) and 29.3% were perpetrated by men only (25.1% when reported by men; 32.3% when reported by women).[56]
In 2000, John Archer conducted a meta-analysis of eighty-two IPV studies. He found that "women were slightly more likely than men to use one or more acts of physical aggression and to use such acts more frequently.