NCT04141839

Evaluation of the Safer Bars Prevention Program for Sexual Assault

Completed NA Results posted Last updated 27 April 2025

What this trial tests

NA trial testing Safer Bars in Sexual Assault Precursor Behavior in 681 participants. Completed in 31 December 2024.

Timeline

16 October 2020

Primary endpoint
1 November 2023

31 December 2024

Quick facts

Lead sponsor	Mary Koss
Phase	NA
Status	Completed
Study type	INTERVENTIONAL
Allocation	randomized
Design	crossover
Masking	single
Primary purpose	prevention
Enrollment	681
Start date	16 October 2020
Primary completion	1 November 2023
Estimated completion	31 December 2024
Sites	1 location across United States

Drugs / interventions tested

• Safer Bars

Conditions studied

• Sexual Assault Precursor Behavior — all drugs for Sexual Assault Precursor Behavior →

Sponsor

Mary Koss

Who can join

19 and older, any sex, with Sexual Assault Precursor Behavior. Patients with the condition only — healthy volunteers not accepted.

Results — posted to ClinicalTrials.gov

Per-arm endpoint measurements with 95% confidence intervals where reported. Source: trial results section.

Number of Participants Who Reported Always Intervening Behavior at 6 Months Primary · at baseline and up to 6 months

Self-reported survey items measuring actual behavior (action taken) in response to observation of sexual aggression in the bar environment will be analyzed to identify significant differences post-intervention.

Group	Value	95% CI
Control Staff	207
Intervention Staff	239

Did Not Offer Promotions Aimed at Attracting Female Patrons Post-intervention Primary · at baseline and up to 3 months

Self-reported survey items completed by bar owners/managers regarding promotions aimed at attracting female patrons

Group	Value	95% CI
Control Managers	13
Intervention Managers	15

Sponsor's own description

The goal is to evaluate at three sites the implementation of the Safer Bars sexual assault prevention program.

Publications & conference data

2 peer-reviewed publications reference this trial (live from Europe PMC):

1. Feasibility and Acceptability of a Bar-Staff Bystander Intervention Training Program for Reducing Sexual Aggression.
   Roberts K, Davis KC, Koss MP, Lopez EC. · · 2025 · cited 2× · PMID 39404150 · DOI 10.15288/jsad.24-00031
2. Safer Bars: A cluster-randomized effectiveness evaluation of alcohol-related sexual violence prevention through bar staff bystander training.
   Davis KC, Koss MP, Lopez EC, Roberts K. · · 2024 · cited 2× · PMID 38458561 · DOI 10.1016/j.cct.2024.107488