Fun with numbers:
From 2005 to 2010, the number of high school students using smokeless
tobacco products shot up 69.2 percent in the county, according to the Florida Department of Health. Meanwhile, the Miami-Dade Department of Health has previously reported that smoking by Florida high school students decreased 43.4 percent from 1998 to 2006.
(Huffington Post)
Nowhere does the Huffington post provide the "N" - that's the number of subjects that make up the percentage. If there were 200 high school students using smokeless
tobacco in 2005, the N would be 338 high school students using smokeless in 2010. If there were 1,000 high school students that smoked in 1998, the N would be 566 high school students smoking in 2006.
Now what if there was overlap? What if some of smokeless users also smoked?
This link is given in the Huffington Post story:
http://big.assets.huffingtonpost.com/Miami-Dade.pdf
It claims that 8.7% of high school students Smoked cigarettes on one or more of the past 30 days, 9.3% Smoked cigars on
one or more of the past 30 days, and 4.4% Used smokeless
tobacco one or more of the past 30 days. Let's see, that adds up to 22.4% using tobacco products. Whoops. The report says 14.4% of high school students Used any form of tobacco on one or more of the past 30 days.
What's the breakdown? Are all the smokeless users exclusive users? Are they all smokers as well? Or do some smoke cigarettes and some smoke cigars? How likely is it that someone who smokes cigars also smokes cigarettes or vice-versa?
Would you not think it is more important to ask how many of these are daily users?
The report tells us that 60.3% Have never smoked a cigarette and will definitely not smoke a cigarette in the future
or if a friend offered one. That leaves 39.7% who DID experiment with cigarettes. And if only 8.7% smoked cigarettes during the past 30 days, that leaves 31% who experimented without becoming regular enough users to have smoked cigarettes during the past 30 days.