Aims: To examine whether the decrease in the mean breath alcohol concentration (BrAC) and the rowdy social atmosphere reported after one month remained stable in the five-month assessment.
Design: Randomized controlled trial.
Setting: University bars.
Participants: The five-month assessment was based on 596 students visiting student bars during ordinary pub evenings.
Intervention: Bartenders (n = 40) in 6 of 12 bars on a university campus underwent training programs in a randomized pattern. Bartenders in control bars did not participate in the program.
Measurements: The BrAC and reported social atmosphere in a five-month follow-up assessment.
Findings: All measurements (BrAC, rowdy, cozy, and high social atmosphere) showed that time had a significant decreasing effect. The positive effects on BrAC and rowdy atmosphere shown in the one-month follow-up were no longer evident after five months.
Conclusion: The positive results after one month were not stable after five months. The study's limitations are noted.