NISVS stands for National Intimate Partner and Sexual Violence Survey
The findings show a depressingly high level of violence among all people, and in some cases people who are gay/lesbian/bisexual are assaulted at higher levels than people in heterosexual relationships. This is particularly true of bisexual women.
Little is known about the national prevalence of intimate partner violence (IPV), sexual violence (SV), and stalking among lesbian, gay, and bisexual women and men in the United States. The Centers for Disease Control and Prevention’s (CDC) National Intimate Partner and Sexual Violence Survey (NISVS): 2010 Findings on Victimization by Sexual Orientation is the first of its kind to present comparisons of victimization by sexual orientation for women and men.
2010 Key Findings on Victimization by Sexual Orientation
The Sexual Orientation Report indicates that individuals who self-identify as lesbian, gay, and bisexual have an equal or higher prevalence of experiencing IPV, SV, and stalking as compared to self-identified heterosexuals. Bisexual women are disproportionally impacted. They experienced a significantly higher lifetime prevalence of rape, physical violence, and/or stalking by an intimate partner, and rape and SV (other than rape) by any perpetrator, when compared to both lesbian and heterosexual women.
For self-identified bisexuals, the rate of violence was very high.
I have read that as a consequence of homosexual behavior not being accepted, people with SSA often meet/party in bars. This can lead to people developing alcohol problems that they might not have otherwise, or it can draw a population that’s more likely to drink. How true that is, I don’t know, but if it is true it may account for some of this.