“Researchers analyzed a database of 129,090 deaths from SIDS from 1973-2006 and 295,151 other infant deaths during that time period. They found that the highest number of deaths from SIDS occur on New Year’s Day: They spike by almost a third above the number of deaths that would be expected on a winter day.
The study doesn’t prove that anything is the cause of the SIDS deaths. (The number of other kinds of infant deaths didn’t spike significantly on New Year’s Day.) However, the researchers point out that there’s plenty of drinking on New Year’s Eve. They point to research that says the number of people involved in alcohol-related car crashes skyrockets on New Year’s Eve, well beyond any other day of the year.”