Pick a random person at a random moment in time. What is the probability that the person is under the influence of alcohol? No more than 3% is my guess, but some of my debate opponents might disagree, so let's appease them and say 6%. Keeping on randomly choosing (person, time) pairs, taking note of whether the person you pick is engaging in any violence. Ignore any violence done by anyone other then the person you randomly picked. 40% of the violence you note occurs during the 6% of the time the person you picked is under the influence of alcohol.
Like someone here writes, correlation does not imply causation, but correlation is evidence of causation, and that is a strong correlation. Specifically, if the person you picked is under the influence, he or she is 10.4 times more likely to be engaging in an act of violence than if he or she is not.
Like someone here writes, correlation does not imply causation, but correlation is evidence of causation, and that is a strong correlation. Specifically, if the person you picked is under the influence, he or she is 10.4 times more likely to be engaging in an act of violence than if he or she is not.