Saberi 1999.
| Methods | Cluster‐RCT. Classes were randomly assigned to 1 of 4 treatment groups | |
| Participants | 178 first‐year undergraduate students (78 men, 88 women; aged 18‐25 years, mean 18.5 years) from 15 "Survival Course" classes at a large Southwestern university, USA | |
| Interventions | Intervention 1: watched a drama performance depicting vignettes of acquaintance rape and rape myths and followed by an interactive discussion between students, facilitators and actors. 44 students Intervention 2: watched a video recording of the drama performance followed by facilitated discussion. 48 students Intervention 3: received a didactic lecture using a feminist framework to discuss rape. 35 students Each intervention was delivered as a single session (duration unclear) Control: received a lecture on stress management. 38 students Interventions were delivered by Master's students of counselling psychology and social work who had received training on how to deliver the interventions |
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| Outcomes | Attitudes towards acquaintance rape as measured by Attitudes Towards Women Scale, Rape Myth Acceptance Scale and Rape Empathy Scale | |
| Follow‐up | 2‐4 days post‐intervention | |
| Notes | ‐ | |
| Risk of bias | ||
| Bias | Authors' judgement | Support for judgement |
| Random sequence generation (selection bias) | Unclear risk | Classes were "randomly assigned" |
| Allocation concealment (selection bias) | Unclear risk | Not stated |
| Incomplete outcome data (attrition bias) All outcomes | Low risk | Initial sample: 178 students (from 15 classes). 12 students were eliminated because they were statistical outliers who gave non‐serious responses. Low attrition rate that is unlikely to be related to outcomes |
| Selective reporting (reporting bias) | Low risk | All outcome measures reported in full (number of participants, means and SDs given) |
| Blinding of participants and personnel (performance bias) All outcomes | High risk | Blinding not possible. Facilitators received training and an outline to follow but no mention how adherence to outline and standardisation of delivery was monitored |
| Blinding of outcome assessment (detection bias) All outcomes | Unclear risk | Not stated |