In statistics, controlling for a variable is the attempt to reduce the effect of confounding variables on an observational study. It means that when looking at the effect of one variable, all other variable predictors are held constant.n statistics, controlling for a variable is the attempt to reduce the effect of confounding variables on an observational study. It means that when looking at the effect of one variable, all other variable predictors are held constant.
100,000 people a year die from alcohol abuse in the U.S. each year, 1,000,000 in ten years. 14 million, or one in 13 adults in the U.S. suffer from alcoholism at any given time. 25% of urban hospital beds are taken up by severe damage from the use of alcohol.
Alcohol impacts people and societies in many ways and it is determined by the volume of alcohol consumed, the pattern of drinking, and, on rare occasions, the quality of alcohol consumed. In 2012, about 3.3 million deaths, or 5.9 % of all global deaths, were attributable to alcohol consumption. The harmful use of alcohol can also result in harm to other people, such as family members, friends, co-workers and strangers.