3 ms·
> In epidemiological surveys, lifetime use == reports using at least once. Not necessarily. For smoking you need to smoke 100 cigarettes before qualifying for
by Alex3917 9y ago
> In epidemiological surveys, lifetime use == reports using at least once.
Not necessarily. For smoking you need to smoke 100 cigarettes before qualifying for lifetime use.
- clappski 9y ago100 cigarettes seems like a very low threshold, that’s 5 packs of 20, even moderate smokers (>10 per day) could go through 200 in a month.