NEW YORK (MainStreet) — If a plague were to wipe out the world’s supply of coffee beans, it seems that scientific progress would grind to a halt and commercials would be a lot less funny.

That, at least, is what we can infer from a survey conducted by Dunkin’ Donuts and CareerBuilder, which together looked at the professions that are the most reliant on coffee to get through the day. Topping the list were scientists and lab technicians and marketing professionals.

The survey came out today in honor of National Coffee Day, a made-up holiday for which 7-Eleven and Krispy Kreme are giving out free coffee. Instead of doing a giveaway, Dunkin’ decided to commission this survey, the second year in a row it has done so.

The survey was conducted online by Harris Interactive, polling 4,721 full-time workers in the U.S. during a three-week period. To determine which professions were most coffee-dependent, they measured which had the highest proportion of workers saying they were less productive without coffee.

This year’s survey saw some shakeups from last year. Health care professionals beat the field last year when it came to coffee dependency, with nurses and doctors taking gold and silver, respectively; this year, they dropped to 13th and sixth place in the rankings. Editors and writers took fourth place after being surprisingly absent from last year’s top 12.

One thing didn’t change, and that’s which region would be in the most trouble if coffee were to disappear from the earth. Once again it’s the Northeast, the birthplace of Dunkin' Donuts. In that part of the country, home of such hard-working cities as Boston and New York, 49% of workers said they were less productive without coffee.

Finally, the survey asked workers how they took their coffee, and answers varied by profession. Those in the field of law take their coffee black, human resources professionals like cream and sugar, and writers are likely to prefer some kind of flavored coffee. 

Here are the top 10:

1.       Scientist or lab technician
2.       Marketing or public relations professional
3.       Education administrator
4.       Editor or writer
5.       Health care administrator
6.       Physician
7.       Food preparer
8.       Professor
9.       Social worker
10.     Financial professional

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