Nightly variation of disorder in a Canadian nightclub

This paper aims to study nightly disorder within a single bar over an extended period, in order to analyse variations across time (n = 258 nights).

The security staff of a large Canadian nightclub agreed to note detailed information on every intervention in which they were involved. Bouncers wrote detailed narratives of each incident of aggression and incivility that occurred in the bar. Environmental characteristics (e.g. number of admissions and alcohol sales) were collected by one of the co-authors.

"Hot nights" were observed. The number of problem events was particularly high on Tuesday nights, which had the highest number of customers admitted and higher alcohol sales. The average alcohol sale per customer was also higher during long weekends, and alcohol sales were positively related to problem events. Finally, path analyses revealed that the presence of more bouncers was a deterrent.

The level of disorder in a bar varies greatly over time. Contrary to what is often postulated, bars are not always high- or low-risk. The results strongly support responsible alcohol-serving policies and highlight the benefits of adequate surveillance.