Allegations of Sexual Violence Against Inmates Reported by Adult Correctional Facilities in the US 2011
"In 2011, correctional administrators reported 8,763 allegations of sexual victimization in prisons, jails, and other adult correctional facilities (figure 1). About half (51%) involved allegations of nonconsensual sexual acts or abusive sexual contacts of inmates with other inmates, and half (49%) involved staff sexual misconduct or sexual harassment directed toward inmates. About 10% of the allegations (902) were substantiated based on follow-up investigation. While the number of allegations has risen since 2005 (6,241), the number substantiated has remained nearly unchanged (885 in 2005)."
Allen J. Beck, PhD, Ramona R. Rantala, and Jessica Rexroat, "Sexual Victimization Reported by Adult Correctional Authorities, 2009-11" (Washington, DC: US Dept. of Justice Bureau of Justice Statistics, January 2014), NCJ243904.