Want to avoid bar fights? Don't go to bars frequented by heavy drinkers with a history of violence!
You didn't know this already?
Well, SOMEBODY had to research such an important issue. So from 1997 to 2002 somebody did just that. And found that bar fights tend to occur in places that are poorly lighted, dirty, and crowded, with patrons that are younger, angrier, impulsive, less considerate, and heavy drinkers.
They also found that women who get in bar fights have had 4 times as many drinks on those nights as they normally do (normal presumably meaning non-bar-fighting nights).
Here's the abstract for the main article. The complete article can be found in the Journal of Studies on Alcohol (which rejected my 1988 submission on cow-tipping).
They actually got 2 articles out of this, with this one focusing just on women. The second article was published in Aggressive Behavior (they're coming to my house next week to see if siblings fight).
Thank you to JoAnna for bringing such important research to my attention.