The current study presents preliminary efficacy findings of a pilot randomized controlled trial of Positive Change© ( +Change© ). +Change© utilizes personalized normative feedback to target alcohol use, sexual assault (SA) victimization, SA perpetration, and bystander intervention tailored for heterosexual cisgender men, heterosexual cisgender women, and sexual and gender-minoritized (SGM) groups. Participants included 165 undergraduate students aged 18 to 25 years old from a large public university in the Southwestern U.S. who engaged in past month heavy episodic drinking. Participants (57 cisgender heterosexual men; 54 cisgender heterosexual women; and 54 SGM) were randomized to +Change© ( n = 83) or an assessment-only control ( n = 82) and completed surveys online at baseline and 3-month follow-up in a parallel design with a 1:1 ratio (NCT04089137). The current study presents the secondary outcomes of the pilot randomized controlled trial which include alcohol use, SA victimization, SA perpetration, and bystander intervention behavior. +Change© was associated with significantly less severe SA victimization and more bystander intervention behavior at 3-month follow-up relative to the control. There were no significant differences between conditions in alcohol use at 3-month follow-up, however, the magnitude of decreases in drinking in the +Change© condition in this pilot study were consistent with other personalized normative feedback interventions. The present study was unable to assess differences in SA perpetration due to low base rates. No adverse effects among those receiving the intervention were observed. Findings suggested that +Change© may be a feasible strategy to prevent SA, by reducing student SA victimization and increasing bystander intervention. A fully powered randomized clinical trial is needed to examine the effects of +Change©.

中文翻译：

---

积极改变（+改变）的初步功效：根据性别和性取向量身定制的酒精和性侵犯综合预防计划的试点随机对照试验


当前的研究提出了 Positive Change© (+Change©) 试点随机对照试验的初步疗效结果。 +Change© 利用个性化规范反馈来针对酒精使用、性侵犯 (SA) 受害、性侵犯实施以及为异性恋顺性别男性、异性恋顺性别女性以及性和性别少数 (SGM) 群体量身定制的旁观者干预。参与者包括来自美国西南部一所大型公立大学的 165 名年龄在 18 至 25 岁之间的本科生，他们在过去一个月内偶尔酗酒。参与者（57 名顺性别异性恋男性；54 名顺性别异性恋女性；以及 54 名 SGM）被随机分配至 +Change©（n = 83）或仅评估对照（n = 82），并在基线和 3 个月随访时完成在线调查。采用 1:1 比例的并行设计 (NCT04089137)。目前的研究介绍了试点随机对照试验的次要结果，包括饮酒、SA 受害、SA 实施和旁观者干预行为。与对照组相比，+Change© 与 3 个月随访中明显减轻的 SA 受害和更多旁观者干预行为相关。在 3 个月的随访中，饮酒情况之间没有显着差异，但是，该试点研究中 +Change© 条件下饮酒量减少的幅度与其他个性化规范反馈干预措施一致。由于基本比率较低，本研究无法评估 SA 实施的差异。接受干预的人中没有观察到不良影响。研究结果表明，+Change© 可能是通过减少学生 SA 受害和增加旁观者干预来预防 SA 的可行策略。 需要进行全面的随机临床试验来检验+Change© 的效果。