RT Journal Article SR Electronic T1 Oxford Understanding Relationships, Sex, Power, Abuse and Consent Experiences (OUR SPACE) cross-sectional survey: a study protocol JF BMJ Open JO BMJ Open FD British Medical Journal Publishing Group SP e051826 DO 10.1136/bmjopen-2021-051826 VO 11 IS 11 A1 Bridget Steele A1 Michelle Degli Esposti A1 Pete Mandeville A1 Gillian Hamnett A1 Elizabeth Nye A1 David K Humphreys YR 2021 UL http://bmjopen.bmj.com/content/11/11/e051826.abstract AB Introduction Sexual violence among higher education students is a public health concern, threatening the general safety of students, often with significant physical and mental health implications for victims. Establishing the prevalence estimates of sexual violence at higher education institutions (HEIs) is essential for designing and resourcing responses to sexual violence, including monitoring the effectiveness of prevention initiatives and institutional programmes. Yet, to date, there have been no rigorous studies assessing prevalence of sexual violence at HEIs in the UK.Methods and analysis Informed by guidance from Universities UK, the University of Oxford administration and the related student advocacy groups working within the University, Oxford Understanding Relationships, Sex, Power, Abuse and Consent Experiences is a cross-sectional survey of all undergraduate and graduate students over the age of 18 enrolled at the University of Oxford, UK. The survey design uses a complete sampling approach and measures adapted from previous campus climate surveys in the USA as well as the Sexual Experiences Survey (USA). The analysis will estimate the prevalence of sexual harassment and sexual violence perpetration and victimisation, and will examine whether ethnicity, gender identity, and sexual orientation are associated with these primary outcomes.Ethics and dissemination Ethical approval was obtained by the Social Sciences and Humanities Interdivisional Research Ethics Committee at the University of Oxford which is a subcommittee of the Central University Research Ethics Committee (ref no.: R73805/RE001). The research team will disseminate findings through peer-reviewed journal articles and conference presentations. A report cowritten by authors and stakeholders will be shared with Oxford University students.