While the higher estimates in earlier studies may be explained by the choice of the establishments in which the studies were conducted, another reason for the difference could be that today's ventilation systems are more efficient, Jenkins said.
Not to mention the fact that there were less smokers in the latter study.
By the way, the definition doesn't differentiate between unfiltered and filtered/inhaled smoke. The latter having most of the carcinogens and particulate absorbed by the smoker and the filter while the unfiltered smoke goes directly into the innocent bystanders lungs. But, you don't care about others - just your own gratification.
Go ahead. Get ugly. I knew it was just a matter of time with you.
I don't care about others? Heh! I love people and my friends and family. My gratification comes from them and my friends in Free Republic. My disdain comes from people like YOU.