HOW MANY DAYS SMOKED CIG IN PAST 30 DAYS
These questions are about your use of tobacco
products. This includes cigarettes, chewing
tobacco, snuff, cigars, and pipe tobacco. The
first questions are about cigarettes only.
During the past 30 days, that is since [DATEFILL], on how many days... (view details)
Taken from: National Survey on Drug Use and Health, 2011.